15655507996 has 6 divisors (see below), whose sum is σ = 27397139000. Its totient is φ = 7827753996.

The previous prime is 15655507991. The next prime is 15655508009. The reversal of 15655507996 is 69970555651.

It is a super-2 number, since 2×15655507996² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15655507996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15655507991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1956938496 + ... + 1956938503.

Almost surely, 2^15655507996 is an apocalyptic number.

It is an amenable number.

15655507996 is a deficient number, since it is larger than the sum of its proper divisors (11741631004).

15655507996 is a wasteful number, since it uses less digits than its factorization.

15655507996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913877003 (or 3913877001 counting only the distinct ones).

The product of its (nonzero) digits is 12757500, while the sum is 58.

The spelling of 15655507996 in words is "fifteen billion, six hundred fifty-five million, five hundred seven thousand, nine hundred ninety-six".