61967944364 has 48 divisors (see below), whose sum is σ = 115923897600. Its totient is φ = 28897995456.

The previous prime is 61967944289. The next prime is 61967944391. The reversal of 61967944364 is 46344976916.

It is a super-2 number, since 2×61967944364² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13710497 + ... + 13715015.

It is an arithmetic number, because the mean of its divisors is an integer number (2415081200).

Almost surely, 2^61967944364 is an apocalyptic number.

It is an amenable number.

61967944364 is a deficient number, since it is larger than the sum of its proper divisors (53955953236).

61967944364 is a wasteful number, since it uses less digits than its factorization.

61967944364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302 (or 7300 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 59.

The spelling of 61967944364 in words is "sixty-one billion, nine hundred sixty-seven million, nine hundred forty-four thousand, three hundred sixty-four".