72487789391493 has 24 divisors (see below), whose sum is σ = 119824307304000. Its totient is φ = 41365543040064.

The previous prime is 72487789391477. The next prime is 72487789391503. The reversal of 72487789391493 is 39419398778427.

72487789391493 is a `hidden beast` number, since 7 + 2 + 48 + 7 + 7 + 89 + 3 + 9 + 1 + 493 = 666.

It is not a de Polignac number, because 72487789391493 - 2⁴ = 72487789391477 is a prime.

It is a super-2 number, since 2×72487789391493² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72487789391443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778437768 + ... + 778530881.

It is an arithmetic number, because the mean of its divisors is an integer number (4992679471000).

Almost surely, 2^{72487789391493} is an apocalyptic number.

It is an amenable number.

72487789391493 is a deficient number, since it is larger than the sum of its proper divisors (47336517912507).

72487789391493 is a wasteful number, since it uses less digits than its factorization.

72487789391493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556969401 (or 1556969398 counting only the distinct ones).

The product of its digits is 4608866304, while the sum is 81.

The spelling of 72487789391493 in words is "seventy-two trillion, four hundred eighty-seven billion, seven hundred eighty-nine million, three hundred ninety-one thousand, four hundred ninety-three".