71666713610 has 48 divisors (see below), whose sum is σ = 136336991616. Its totient is φ = 27072673056.

The previous prime is 71666713523. The next prime is 71666713627. The reversal of 71666713610 is 1631766617.

It is a super-2 number, since 2×71666713610² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1410467 + ... + 1460393.

It is an arithmetic number, because the mean of its divisors is an integer number (2840353992).

Almost surely, 2^71666713610 is an apocalyptic number.

71666713610 is a deficient number, since it is larger than the sum of its proper divisors (64670278006).

71666713610 is a wasteful number, since it uses less digits than its factorization.

71666713610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50115 (or 50036 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 71666713610 in words is "seventy-one billion, six hundred sixty-six million, seven hundred thirteen thousand, six hundred ten".