71688902392 has 8 divisors (see below), whose sum is σ = 134416692000. Its totient is φ = 35844451192.

The previous prime is 71688902323. The next prime is 71688902399. The reversal of 71688902392 is 29320988617.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71688902399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4480556392 + ... + 4480556407.

It is an arithmetic number, because the mean of its divisors is an integer number (16802086500).

Almost surely, 2^71688902392 is an apocalyptic number.

It is an amenable number.

71688902392 is a deficient number, since it is larger than the sum of its proper divisors (62727789608).

71688902392 is a wasteful number, since it uses less digits than its factorization.

71688902392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8961112805 (or 8961112801 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 71688902392 in words is "seventy-one billion, six hundred eighty-eight million, nine hundred two thousand, three hundred ninety-two".