71963553672 has 48 divisors (see below), whose sum is σ = 206366076540. Its totient is φ = 22576800768.

The previous prime is 71963553659. The next prime is 71963553713. The reversal of 71963553672 is 27635536917.

71963553672 is a `hidden beast` number, since 7 + 1 + 9 + 6 + 35 + 536 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71934458436 + 29095236 = 268206^2 + 5394^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29395653 + ... + 29398100.

Almost surely, 2^71963553672 is an apocalyptic number.

71963553672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71963553672 is an abundant number, since it is smaller than the sum of its proper divisors (134402522868).

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

71963553672 is a wasteful number, since it uses less digits than its factorization.

71963553672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58793782 (or 58793775 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

It can be divided in two parts, 7196355 and 3672, that added together give a palindrome (7200027).

The spelling of 71963553672 in words is "seventy-one billion, nine hundred sixty-three million, five hundred fifty-three thousand, six hundred seventy-two".