72534194785 has 16 divisors (see below), whose sum is σ = 96760258560. Its totient is φ = 51835849920.

The previous prime is 72534194779. The next prime is 72534194801. The reversal of 72534194785 is 58749143527.

It is not a de Polignac number, because 72534194785 - 2¹¹ = 72534192737 is a prime.

It is a super-2 number, since 2×72534194785² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17996545 + ... + 18000574.

It is an arithmetic number, because the mean of its divisors is an integer number (6047516160).

Almost surely, 2^72534194785 is an apocalyptic number.

It is an amenable number.

72534194785 is a deficient number, since it is larger than the sum of its proper divisors (24226063775).

72534194785 is a wasteful number, since it uses less digits than its factorization.

72534194785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35997168.

The product of its digits is 8467200, while the sum is 55.

The spelling of 72534194785 in words is "seventy-two billion, five hundred thirty-four million, one hundred ninety-four thousand, seven hundred eighty-five".