72402445313 has 16 divisors (see below), whose sum is σ = 80569337280. Its totient is φ = 64507492800.

The previous prime is 72402445301. The next prime is 72402445319. The reversal of 72402445313 is 31354420427.

It is a cyclic number.

It is not a de Polignac number, because 72402445313 - 2⁶ = 72402445249 is a prime.

It is a super-2 number, since 2×72402445313² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72402445319) 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, 8903 + ... + 380636.

It is an arithmetic number, because the mean of its divisors is an integer number (5035583580).

Almost surely, 2^72402445313 is an apocalyptic number.

It is an amenable number.

72402445313 is a deficient number, since it is larger than the sum of its proper divisors (8166891967).

72402445313 is a wasteful number, since it uses less digits than its factorization.

72402445313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389888.

The product of its (nonzero) digits is 80640, while the sum is 35.

It can be divided in two parts, 72402 and 445313, that added together give a palindrome (517715).

The spelling of 72402445313 in words is "seventy-two billion, four hundred two million, four hundred forty-five thousand, three hundred thirteen".