15664047512911 has 48 divisors (see below), whose sum is σ = 19354532356224. Its totient is φ = 12596488160256.

The previous prime is 15664047512881. The next prime is 15664047512959. The reversal of 15664047512911 is 11921574046651.

It is not a de Polignac number, because 15664047512911 - 2⁷ = 15664047512783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15664047510911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 390672781 + ... + 390712873.

It is an arithmetic number, because the mean of its divisors is an integer number (403219424088).

Almost surely, 2^{15664047512911} is an apocalyptic number.

15664047512911 is a deficient number, since it is larger than the sum of its proper divisors (3690484843313).

15664047512911 is a wasteful number, since it uses less digits than its factorization.

15664047512911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41600 (or 41593 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 15664047512911 in words is "fifteen trillion, six hundred sixty-four billion, forty-seven million, five hundred twelve thousand, nine hundred eleven".