15506820162 has 24 divisors (see below), whose sum is σ = 34058361324. Its totient is φ = 5098132224.

The previous prime is 15506820149. The next prime is 15506820167. The reversal of 15506820162 is 26102860551.

15506820162 is a `hidden beast` number, since 15 + 506 + 82 + 0 + 1 + 62 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15301442601 + 205377561 = 123699^2 + 14331^2 .

It is a super-2 number, since 2×15506820162² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15506820167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5899303 + ... + 5901930.

Almost surely, 2^15506820162 is an apocalyptic number.

15506820162 is an abundant number, since it is smaller than the sum of its proper divisors (18551541162).

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

15506820162 is a wasteful number, since it uses less digits than its factorization.

15506820162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11801314 (or 11801311 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 15506820162 in words is "fifteen billion, five hundred six million, eight hundred twenty thousand, one hundred sixty-two".