15515660160 has 1920 divisors, whose sum is σ = 78056732160. Its totient is φ = 2846638080.

The previous prime is 15515660159. The next prime is 15515660161. The reversal of 15515660160 is 6106651551.

15515660160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15515660159) and next prime (15515660161).

It is a tau number, because it is divible by the number of its divisors (1920).

It is a super-2 number, since 2×15515660160² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15515660161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 674593909 + ... + 674593931.

It is an arithmetic number, because the mean of its divisors is an integer number (40654548).

Almost surely, 2^15515660160 is an apocalyptic number.

15515660160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15515660160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39028366080).

15515660160 is an abundant number, since it is smaller than the sum of its proper divisors (62541072000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15515660160 is a wasteful number, since it uses less digits than its factorization.

15515660160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 15515660160 in words is "fifteen billion, five hundred fifteen million, six hundred sixty thousand, one hundred sixty".