72537178713 has 16 divisors (see below), whose sum is σ = 98854810560. Its totient is φ = 47297155136.

The previous prime is 72537178709. The next prime is 72537178723. The reversal of 72537178713 is 31787173527.

It is a cyclic number.

It is not a de Polignac number, because 72537178713 - 2² = 72537178709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72537178723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1005270 + ... + 1075007.

It is an arithmetic number, because the mean of its divisors is an integer number (6178425660).

Almost surely, 2^72537178713 is an apocalyptic number.

It is an amenable number.

72537178713 is a deficient number, since it is larger than the sum of its proper divisors (26317631847).

72537178713 is a wasteful number, since it uses less digits than its factorization.

72537178713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080536.

The product of its digits is 1728720, while the sum is 51.

The spelling of 72537178713 in words is "seventy-two billion, five hundred thirty-seven million, one hundred seventy-eight thousand, seven hundred thirteen".