61813958179 has 8 divisors (see below), whose sum is σ = 65454103728. Its totient is φ = 58174260480.

The previous prime is 61813958137. The next prime is 61813958209. The reversal of 61813958179 is 97185931816.

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

It is a cyclic number.

It is not a de Polignac number, because 61813958179 - 2²⁵ = 61780403747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61813958879) 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, 196519 + ... + 402799.

It is an arithmetic number, because the mean of its divisors is an integer number (8181762966).

Almost surely, 2^61813958179 is an apocalyptic number.

61813958179 is a deficient number, since it is larger than the sum of its proper divisors (3640145549).

61813958179 is a wasteful number, since it uses less digits than its factorization.

61813958179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223925.

The product of its digits is 3265920, while the sum is 58.

The spelling of 61813958179 in words is "sixty-one billion, eight hundred thirteen million, nine hundred fifty-eight thousand, one hundred seventy-nine".