15420566016 has 240 divisors, whose sum is σ = 47026115136. Its totient is φ = 4854693888.

The previous prime is 15420566011. The next prime is 15420566027. The reversal of 15420566016 is 61066502451.

15420566016 is a `hidden beast` number, since 1 + 5 + 42 + 0 + 5 + 6 + 601 + 6 = 666.

It is a super-2 number, since 2×15420566016² (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 not an unprimeable number, because it can be changed into a prime (15420566011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8795796 + ... + 8797548.

Almost surely, 2^15420566016 is an apocalyptic number.

15420566016 is a gapful number since it is divisible by the number (16) 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 15420566016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23513057568).

15420566016 is an abundant number, since it is smaller than the sum of its proper divisors (31605549120).

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

15420566016 is a wasteful number, since it uses less digits than its factorization.

15420566016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 15420566016 in words is "fifteen billion, four hundred twenty million, five hundred sixty-six thousand, sixteen".