613765776121 has 16 divisors (see below), whose sum is σ = 648257863680. Its totient is φ = 579926215440.

The previous prime is 613765776109. The next prime is 613765776131. The reversal of 613765776121 is 121677567316.

It is not a de Polignac number, because 613765776121 - 2⁵ = 613765776089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613765776101) 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, 17107720 + ... + 17143558.

It is an arithmetic number, because the mean of its divisors is an integer number (40516116480).

Almost surely, 2^613765776121 is an apocalyptic number.

It is an amenable number.

613765776121 is a deficient number, since it is larger than the sum of its proper divisors (34492087559).

613765776121 is a wasteful number, since it uses less digits than its factorization.

613765776121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44916.

The product of its digits is 2222640, while the sum is 52.

The spelling of 613765776121 in words is "six hundred thirteen billion, seven hundred sixty-five million, seven hundred seventy-six thousand, one hundred twenty-one".