15690867864 has 32 divisors (see below), whose sum is σ = 44831051520. Its totient is φ = 4483105056.

The previous prime is 15690867823. The next prime is 15690867889. The reversal of 15690867864 is 46876809651.

It is a junction number, because it is equal to n+sod(n) for n = 15690867798 and 15690867807.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 46698844 + ... + 46699179.

It is an arithmetic number, because the mean of its divisors is an integer number (1400970360).

Almost surely, 2^15690867864 is an apocalyptic number.

15690867864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15690867864 is an abundant number, since it is smaller than the sum of its proper divisors (29140183656).

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

15690867864 is a wasteful number, since it uses less digits than its factorization.

15690867864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93398039 (or 93398035 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 15690867864 in words is "fifteen billion, six hundred ninety million, eight hundred sixty-seven thousand, eight hundred sixty-four".