15871136064 has 84 divisors (see below), whose sum is σ = 48848308704. Its totient is φ = 4534607616.

The previous prime is 15871136033. The next prime is 15871136089. The reversal of 15871136064 is 46063117851.

15871136064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834084 + ... + 852899.

Almost surely, 2^15871136064 is an apocalyptic number.

15871136064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15871136064 is an abundant number, since it is smaller than the sum of its proper divisors (32977172640).

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

15871136064 is a wasteful number, since it uses less digits than its factorization.

15871136064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687012 (or 1686995 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 15871136064 in words is "fifteen billion, eight hundred seventy-one million, one hundred thirty-six thousand, sixty-four".