726374317642037 has 4 divisors (see below), whose sum is σ = 744090764413836. Its totient is φ = 708657870870240.

The previous prime is 726374317642031. The next prime is 726374317642093. The reversal of 726374317642037 is 730246713473627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11012482072036 + 715361835570001 = 3318506^2 + 26746249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726374317642037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726374317642031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8858223385838 + ... + 8858223385919.

It is an arithmetic number, because the mean of its divisors is an integer number (186022691103459).

Almost surely, 2^{726374317642037} is an apocalyptic number.

It is an amenable number.

726374317642037 is a deficient number, since it is larger than the sum of its proper divisors (17716446771799).

726374317642037 is a wasteful number, since it uses less digits than its factorization.

726374317642037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17716446771798.

The product of its (nonzero) digits is 149361408, while the sum is 62.

The spelling of 726374317642037 in words is "seven hundred twenty-six trillion, three hundred seventy-four billion, three hundred seventeen million, six hundred forty-two thousand, thirty-seven".