15151515420 has 192 divisors, whose sum is σ = 46759265280. Its totient is φ = 3648724992.

The previous prime is 15151515403. The next prime is 15151515451. The reversal of 15151515420 is 2451515151.

15151515420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 9254842 + ... + 9256478.

It is an arithmetic number, because the mean of its divisors is an integer number (243537840).

Almost surely, 2^15151515420 is an apocalyptic number.

15151515420 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 15151515420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23379632640).

15151515420 is an abundant number, since it is smaller than the sum of its proper divisors (31607749860).

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

15151515420 is a wasteful number, since it uses less digits than its factorization.

15151515420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 30.

The spelling of 15151515420 in words is "fifteen billion, one hundred fifty-one million, five hundred fifteen thousand, four hundred twenty".