15662660944 has 40 divisors (see below), whose sum is σ = 36506959040. Its totient is φ = 6359275008.

The previous prime is 15662660941. The next prime is 15662661037. The reversal of 15662660944 is 44906626651.

It is a super-2 number, since 2×15662660944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15662660941) 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, 3678009 + ... + 3682264.

It is an arithmetic number, because the mean of its divisors is an integer number (912673976).

Almost surely, 2^15662660944 is an apocalyptic number.

15662660944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15662660944 is an abundant number, since it is smaller than the sum of its proper divisors (20844298096).

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

15662660944 is a wasteful number, since it uses less digits than its factorization.

15662660944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7360307 (or 7360301 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 15662660944 in words is "fifteen billion, six hundred sixty-two million, six hundred sixty thousand, nine hundred forty-four".