61331100117 has 32 divisors (see below), whose sum is σ = 94446643200. Its totient is φ = 34677149760.

The previous prime is 61331100113. The next prime is 61331100143. The reversal of 61331100117 is 71100113316.

It is not a de Polignac number, because 61331100117 - 2² = 61331100113 is a prime.

It is a super-2 number, since 2×61331100117² (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 (61331100113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715858 + ... + 796940.

It is an arithmetic number, because the mean of its divisors is an integer number (2951457600).

Almost surely, 2^61331100117 is an apocalyptic number.

It is an amenable number.

61331100117 is a deficient number, since it is larger than the sum of its proper divisors (33115543083).

61331100117 is a wasteful number, since it uses less digits than its factorization.

61331100117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81473.

The product of its (nonzero) digits is 378, while the sum is 24.

The spelling of 61331100117 in words is "sixty-one billion, three hundred thirty-one million, one hundred thousand, one hundred seventeen".