71989000670 has 16 divisors (see below), whose sum is σ = 129612611808. Its totient is φ = 28788397920.

The previous prime is 71989000639. The next prime is 71989000697. The reversal of 71989000670 is 7600098917.

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, 858221 + ... + 938360.

It is an arithmetic number, because the mean of its divisors is an integer number (8100788238).

Almost surely, 2^71989000670 is an apocalyptic number.

71989000670 is a deficient number, since it is larger than the sum of its proper divisors (57623611138).

71989000670 is a wasteful number, since it uses less digits than its factorization.

71989000670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800595.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 71989000670 in words is "seventy-one billion, nine hundred eighty-nine million, six hundred seventy", and thus it is an aban number.