72775146744 has 96 divisors (see below), whose sum is σ = 197801669520. Its totient is φ = 24172113408.

The previous prime is 72775146737. The next prime is 72775146761. The reversal of 72775146744 is 44764157727.

It is a happy number.

72775146744 is a `hidden beast` number, since 7 + 27 + 7 + 514 + 67 + 44 = 666.

It is a super-2 number, since 2×72775146744² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 36884542 + ... + 36886514.

Almost surely, 2^72775146744 is an apocalyptic number.

It is an amenable number.

72775146744 is an abundant number, since it is smaller than the sum of its proper divisors (125026522776).

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

72775146744 is a wasteful number, since it uses less digits than its factorization.

72775146744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549 (or 3542 counting only the distinct ones).

The product of its digits is 9219840, while the sum is 54.

The spelling of 72775146744 in words is "seventy-two billion, seven hundred seventy-five million, one hundred forty-six thousand, seven hundred forty-four".