71231444900 has 72 divisors (see below), whose sum is σ = 192713457216. Its totient is φ = 22202006400.

The previous prime is 71231444899. The next prime is 71231444927. The reversal of 71231444900 is 944413217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 4617719 + ... + 4633118.

Almost surely, 2^71231444900 is an apocalyptic number.

71231444900 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71231444900 is an abundant number, since it is smaller than the sum of its proper divisors (121482012316).

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

71231444900 is a wasteful number, since it uses less digits than its factorization.

71231444900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250869 (or 9250862 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 71231444900 in words is "seventy-one billion, two hundred thirty-one million, four hundred forty-four thousand, nine hundred".