71379391756 has 24 divisors (see below), whose sum is σ = 125956267920. Its totient is φ = 35392473600.

The previous prime is 71379391747. The next prime is 71379391771. The reversal of 71379391756 is 65719397317.

It is a self number, because there is not a number n which added to its sum of digits gives 71379391756.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416976 + ... + 562696.

It is an arithmetic number, because the mean of its divisors is an integer number (5248177830).

Almost surely, 2^71379391756 is an apocalyptic number.

It is an amenable number.

71379391756 is a deficient number, since it is larger than the sum of its proper divisors (54576876164).

71379391756 is a wasteful number, since it uses less digits than its factorization.

71379391756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146745 (or 146743 counting only the distinct ones).

The product of its digits is 7501410, while the sum is 58.

The spelling of 71379391756 in words is "seventy-one billion, three hundred seventy-nine million, three hundred ninety-one thousand, seven hundred fifty-six".