71857540004 has 12 divisors (see below), whose sum is σ = 125755021644. Its totient is φ = 35927533824.

The previous prime is 71857539961. The next prime is 71857540081. The reversal of 71857540004 is 40004575817.

It can be written as a sum of positive squares in 2 ways, for example, as 19530062500 + 52327477504 = 139750^2 + 228752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171449 + ... + 416064.

It is an arithmetic number, because the mean of its divisors is an integer number (10479585137).

Almost surely, 2^71857540004 is an apocalyptic number.

It is an amenable number.

71857540004 is a deficient number, since it is larger than the sum of its proper divisors (53897481640).

71857540004 is a wasteful number, since it uses less digits than its factorization.

71857540004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618094 (or 618092 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 41.

The spelling of 71857540004 in words is "seventy-one billion, eight hundred fifty-seven million, five hundred forty thousand, four".