61387965179 has 8 divisors (see below), whose sum is σ = 61591682448. Its totient is φ = 61184311840.

The previous prime is 61387965167. The next prime is 61387965211. The reversal of 61387965179 is 97156978316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61387965179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61387905179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616569 + ... + 2639925.

It is an arithmetic number, because the mean of its divisors is an integer number (7698960306).

Almost surely, 2^61387965179 is an apocalyptic number.

61387965179 is a deficient number, since it is larger than the sum of its proper divisors (203717269).

61387965179 is a wasteful number, since it uses less digits than its factorization.

61387965179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31965.

The product of its digits is 17146080, while the sum is 62.

The spelling of 61387965179 in words is "sixty-one billion, three hundred eighty-seven million, nine hundred sixty-five thousand, one hundred seventy-nine".