15665616445962 has 64 divisors (see below), whose sum is σ = 36641578051584. Its totient is φ = 4371593405760.

The previous prime is 15665616445961. The next prime is 15665616446009. The reversal of 15665616445962 is 26954461656651.

15665616445962 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15665616445962² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15665616445893 and 15665616445902.

It is not an unprimeable number, because it can be changed into a prime (15665616445961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40244448 + ... + 40631844.

It is an arithmetic number, because the mean of its divisors is an integer number (572524657056).

Almost surely, 2^{15665616445962} is an apocalyptic number.

15665616445962 is an abundant number, since it is smaller than the sum of its proper divisors (20975961605622).

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

15665616445962 is a wasteful number, since it uses less digits than its factorization.

15665616445962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409843.

The product of its digits is 279936000, while the sum is 66.

The spelling of 15665616445962 in words is "fifteen trillion, six hundred sixty-five billion, six hundred sixteen million, four hundred forty-five thousand, nine hundred sixty-two".