15664405611356 has 12 divisors (see below), whose sum is σ = 27419089349568. Its totient is φ = 7830380082912.

The previous prime is 15664405611341. The next prime is 15664405611373. The reversal of 15664405611356 is 65311650446651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15664405611298 and 15664405611307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455661356 + ... + 455695731.

It is an arithmetic number, because the mean of its divisors is an integer number (2284924112464).

Almost surely, 2^{15664405611356} is an apocalyptic number.

It is an amenable number.

15664405611356 is a deficient number, since it is larger than the sum of its proper divisors (11754683738212).

15664405611356 is a wasteful number, since it uses less digits than its factorization.

15664405611356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911361388 (or 911361386 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 53.

The spelling of 15664405611356 in words is "fifteen trillion, six hundred sixty-four billion, four hundred five million, six hundred eleven thousand, three hundred fifty-six".