616631655432331 has 24 divisors (see below), whose sum is σ = 782542287059760. Its totient is φ = 480475976198400.

The previous prime is 616631655432269. The next prime is 616631655432341. The reversal of 616631655432331 is 133234556136616.

It is not a de Polignac number, because 616631655432331 - 2²⁵ = 616631621877899 is a prime.

It is a super-2 number, since 2×616631655432331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616631655432341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3321586 + ... + 35274583.

It is an arithmetic number, because the mean of its divisors is an integer number (32605928627490).

Almost surely, 2^{616631655432331} is an apocalyptic number.

616631655432331 is a deficient number, since it is larger than the sum of its proper divisors (165910631627429).

616631655432331 is a wasteful number, since it uses less digits than its factorization.

616631655432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38625835 (or 38625828 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 55.

The spelling of 616631655432331 in words is "six hundred sixteen trillion, six hundred thirty-one billion, six hundred fifty-five million, four hundred thirty-two thousand, three hundred thirty-one".