624621131961 has 16 divisors (see below), whose sum is σ = 885698990400. Its totient is φ = 390430568448.

The previous prime is 624621131917. The next prime is 624621131969. The reversal of 624621131961 is 169131126426.

It is a happy number.

It is not a de Polignac number, because 624621131961 - 2¹⁴ = 624621115577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (624621131969) 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, 56480376 + ... + 56491433.

It is an arithmetic number, because the mean of its divisors is an integer number (55356186900).

Almost surely, 2^624621131961 is an apocalyptic number.

It is an amenable number.

624621131961 is a deficient number, since it is larger than the sum of its proper divisors (261077858439).

624621131961 is a wasteful number, since it uses less digits than its factorization.

624621131961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112971928.

The product of its digits is 93312, while the sum is 42.

The spelling of 624621131961 in words is "six hundred twenty-four billion, six hundred twenty-one million, one hundred thirty-one thousand, nine hundred sixty-one".