616833979445 has 16 divisors (see below), whose sum is σ = 740694933360. Its totient is φ = 493137874944.

The previous prime is 616833979441. The next prime is 616833979483. The reversal of 616833979445 is 544979338616.

It can be written as a sum of positive squares in 8 ways, for example, as 19031306116 + 597802673329 = 137954^2 + 773177^2 .

It is a cyclic number.

It is not a de Polignac number, because 616833979445 - 2² = 616833979441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616833979441) 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, 85324091 + ... + 85331319.

It is an arithmetic number, because the mean of its divisors is an integer number (46293433335).

Almost surely, 2^616833979445 is an apocalyptic number.

It is an amenable number.

616833979445 is a deficient number, since it is larger than the sum of its proper divisors (123860953915).

616833979445 is a wasteful number, since it uses less digits than its factorization.

616833979445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16264.

The product of its digits is 117573120, while the sum is 65.

The spelling of 616833979445 in words is "six hundred sixteen billion, eight hundred thirty-three million, nine hundred seventy-nine thousand, four hundred forty-five".