61918444517883 has 16 divisors (see below), whose sum is σ = 83343319476480. Its totient is φ = 40886394286496.

The previous prime is 61918444517861. The next prime is 61918444517953. The reversal of 61918444517883 is 38871544481916.

It is a cyclic number.

It is not a de Polignac number, because 61918444517883 - 2²⁶ = 61918377409019 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61918444557883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14061735 + ... + 17932352.

It is an arithmetic number, because the mean of its divisors is an integer number (5208957467280).

Almost surely, 2^{61918444517883} is an apocalyptic number.

61918444517883 is a deficient number, since it is larger than the sum of its proper divisors (21424874958597).

61918444517883 is a wasteful number, since it uses less digits than its factorization.

61918444517883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32000226.

The product of its digits is 185794560, while the sum is 69.

The spelling of 61918444517883 in words is "sixty-one trillion, nine hundred eighteen billion, four hundred forty-four million, five hundred seventeen thousand, eight hundred eighty-three".