72983764791 has 12 divisors (see below), whose sum is σ = 120481135632. Its totient is φ = 41705008416.

The previous prime is 72983764787. The next prime is 72983764837. The reversal of 72983764791 is 19746738927.

72983764791 is a `hidden beast` number, since 7 + 2 + 98 + 3 + 76 + 479 + 1 = 666.

It is not a de Polignac number, because 72983764791 - 2² = 72983764787 is a prime.

It is a super-2 number, since 2×72983764791² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1158472457 = 72983764791 / (7 + 2 + 9 + 8 + 3 + 7 + 6 + 4 + 7 + 9 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72983564791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579236166 + ... + 579236291.

It is an arithmetic number, because the mean of its divisors is an integer number (10040094636).

Almost surely, 2^72983764791 is an apocalyptic number.

72983764791 is a deficient number, since it is larger than the sum of its proper divisors (47497370841).

72983764791 is a wasteful number, since it uses less digits than its factorization.

72983764791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158472470 (or 1158472467 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 63.

The spelling of 72983764791 in words is "seventy-two billion, nine hundred eighty-three million, seven hundred sixty-four thousand, seven hundred ninety-one".