71369645720 has 16 divisors (see below), whose sum is σ = 160581702960. Its totient is φ = 28547858272.

The previous prime is 71369645719. The next prime is 71369645749. The reversal of 71369645720 is 2754696317.

It is a congruent number.

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, 892120532 + ... + 892120611.

It is an arithmetic number, because the mean of its divisors is an integer number (10036356435).

Almost surely, 2^71369645720 is an apocalyptic number.

It is an amenable number.

71369645720 is an abundant number, since it is smaller than the sum of its proper divisors (89212057240).

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

71369645720 is a wasteful number, since it uses less digits than its factorization.

71369645720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784241154 (or 1784241150 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 71369645720 in words is "seventy-one billion, three hundred sixty-nine million, six hundred forty-five thousand, seven hundred twenty".