71521680662 has 16 divisors (see below), whose sum is σ = 113598271152. Its totient is φ = 33655776000.

The previous prime is 71521680569. The next prime is 71521680697. The reversal of 71521680662 is 26608612517.

It is a congruent number.

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, 1307738 + ... + 1361330.

It is an arithmetic number, because the mean of its divisors is an integer number (7099891947).

Almost surely, 2^71521680662 is an apocalyptic number.

71521680662 is a deficient number, since it is larger than the sum of its proper divisors (42076590490).

71521680662 is a wasteful number, since it uses less digits than its factorization.

71521680662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92863.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 71521680662 in words is "seventy-one billion, five hundred twenty-one million, six hundred eighty thousand, six hundred sixty-two".