15505802668 has 12 divisors (see below), whose sum is σ = 27220756752. Its totient is φ = 7728443600.

The previous prime is 15505802647. The next prime is 15505802681. The reversal of 15505802668 is 86620850551.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6113008 + ... + 6115543.

It is an arithmetic number, because the mean of its divisors is an integer number (2268396396).

Almost surely, 2^15505802668 is an apocalyptic number.

It is an amenable number.

15505802668 is a deficient number, since it is larger than the sum of its proper divisors (11714954084).

15505802668 is a wasteful number, since it uses less digits than its factorization.

15505802668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12228872 (or 12228870 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 15505802668 in words is "fifteen billion, five hundred five million, eight hundred two thousand, six hundred sixty-eight".