71920391200 has 72 divisors (see below), whose sum is σ = 200657907072. Its totient is φ = 24658417920.

The previous prime is 71920391119. The next prime is 71920391201. The reversal of 71920391200 is 219302917.

It is a happy number.

It is a super-2 number, since 2×71920391200² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71920391201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6415864 + ... + 6427063.

It is an arithmetic number, because the mean of its divisors is an integer number (2786915376).

Almost surely, 2^71920391200 is an apocalyptic number.

71920391200 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71920391200 is an abundant number, since it is smaller than the sum of its proper divisors (128737515872).

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

71920391200 is a wasteful number, since it uses less digits than its factorization.

71920391200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12842954 (or 12842941 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 71920391200 in words is "seventy-one billion, nine hundred twenty million, three hundred ninety-one thousand, two hundred".