15606106656 has 48 divisors (see below), whose sum is σ = 46818321984. Its totient is φ = 4458887424.

The previous prime is 15606106651. The next prime is 15606106673. The reversal of 15606106656 is 65660160651.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (15606106651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11611015 + ... + 11612358.

It is an arithmetic number, because the mean of its divisors is an integer number (975381708).

Almost surely, 2^15606106656 is an apocalyptic number.

15606106656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15606106656 is an abundant number, since it is smaller than the sum of its proper divisors (31212215328).

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

15606106656 is a wasteful number, since it uses less digits than its factorization.

15606106656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23223393 (or 23223385 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 15606106656 in words is "fifteen billion, six hundred six million, one hundred six thousand, six hundred fifty-six".