71900168685 has 32 divisors (see below), whose sum is σ = 115336286208. Its totient is φ = 38248203840.

The previous prime is 71900168671. The next prime is 71900168707. The reversal of 71900168685 is 58686100917.

It is not a de Polignac number, because 71900168685 - 2⁶ = 71900168621 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 13555744 + ... + 13561046.

It is an arithmetic number, because the mean of its divisors is an integer number (3604258944).

Almost surely, 2^71900168685 is an apocalyptic number.

It is an amenable number.

71900168685 is a deficient number, since it is larger than the sum of its proper divisors (43436117523).

71900168685 is a wasteful number, since it uses less digits than its factorization.

71900168685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465.

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 71900168685 in words is "seventy-one billion, nine hundred million, one hundred sixty-eight thousand, six hundred eighty-five".