15656402106 has 48 divisors (see below), whose sum is σ = 34821154368. Its totient is φ = 5081025600.

The previous prime is 15656402101. The next prime is 15656402123. The reversal of 15656402106 is 60120465651.

15656402106 is a `hidden beast` number, since 1 + 5 + 6 + 5 + 640 + 2 + 1 + 0 + 6 = 666.

It is a super-2 number, since 2×15656402106² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15656402101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340755 + ... + 383961.

It is an arithmetic number, because the mean of its divisors is an integer number (725440716).

Almost surely, 2^15656402106 is an apocalyptic number.

15656402106 is an abundant number, since it is smaller than the sum of its proper divisors (19164752262).

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

15656402106 is a wasteful number, since it uses less digits than its factorization.

15656402106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43747 (or 43744 counting only the distinct ones).

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

Adding to 15656402106 its reverse (60120465651), we get a palindrome (75776867757).

The spelling of 15656402106 in words is "fifteen billion, six hundred fifty-six million, four hundred two thousand, one hundred six".