72738791773248 has 56 divisors (see below), whose sum is σ = 193567175016768. Its totient is φ = 24106112098816.

The previous prime is 72738791773247. The next prime is 72738791773309. The reversal of 72738791773248 is 84237719783727.

It is a self number, because there is not a number n which added to its sum of digits gives 72738791773248.

It is not an unprimeable number, because it can be changed into a prime (72738791773247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094902836 + ... + 1094969267.

It is an arithmetic number, because the mean of its divisors is an integer number (3456556696728).

Almost surely, 2^{72738791773248} is an apocalyptic number.

It is an amenable number.

72738791773248 is an abundant number, since it is smaller than the sum of its proper divisors (120828383243520).

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

72738791773248 is a wasteful number, since it uses less digits than its factorization.

72738791773248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189872291 (or 2189872281 counting only the distinct ones).

The product of its digits is 1394039808, while the sum is 75.

The spelling of 72738791773248 in words is "seventy-two trillion, seven hundred thirty-eight billion, seven hundred ninety-one million, seven hundred seventy-three thousand, two hundred forty-eight".