72843961492 has 12 divisors (see below), whose sum is σ = 130922255380. Its totient is φ = 35437602816.

The previous prime is 72843961469. The next prime is 72843961493. The reversal of 72843961492 is 29416934827.

It can be written as a sum of positive squares in 2 ways, for example, as 58958638596 + 13885322896 = 242814^2 + 117836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72843961493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246094317 + ... + 246094612.

Almost surely, 2^72843961492 is an apocalyptic number.

It is an amenable number.

72843961492 is a deficient number, since it is larger than the sum of its proper divisors (58078293888).

72843961492 is a wasteful number, since it uses less digits than its factorization.

72843961492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492188970 (or 492188968 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The spelling of 72843961492 in words is "seventy-two billion, eight hundred forty-three million, nine hundred sixty-one thousand, four hundred ninety-two".