71372611660 has 96 divisors (see below), whose sum is σ = 178093440000. Its totient is φ = 23507801856.

The previous prime is 71372611649. The next prime is 71372611721. The reversal of 71372611660 is 6611627317.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 763771 + ... + 852109.

It is an arithmetic number, because the mean of its divisors is an integer number (1855140000).

Almost surely, 2^71372611660 is an apocalyptic number.

71372611660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71372611660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89046720000).

71372611660 is an abundant number, since it is smaller than the sum of its proper divisors (106720828340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71372611660 is a wasteful number, since it uses less digits than its factorization.

71372611660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88583 (or 88581 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 71372611660 in words is "seventy-one billion, three hundred seventy-two million, six hundred eleven thousand, six hundred sixty".