61672562631 has 24 divisors (see below), whose sum is σ = 93982936320. Its totient is φ = 38863118736.

The previous prime is 61672562587. The next prime is 61672562647. The reversal of 61672562631 is 13626527616.

61672562631 is a `hidden beast` number, since 6 + 1 + 6 + 7 + 2 + 5 + 6 + 2 + 631 = 666.

It is not a de Polignac number, because 61672562631 - 2¹⁰ = 61672561607 is a prime.

It is a super-2 number, since 2×61672562631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672562431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331311 + ... + 482816.

It is an arithmetic number, because the mean of its divisors is an integer number (3915955680).

Almost surely, 2^61672562631 is an apocalyptic number.

61672562631 is a deficient number, since it is larger than the sum of its proper divisors (32310373689).

61672562631 is a wasteful number, since it uses less digits than its factorization.

61672562631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814595 (or 814592 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 61672562631 in words is "sixty-one billion, six hundred seventy-two million, five hundred sixty-two thousand, six hundred thirty-one".