91886456977 has 8 divisors (see below), whose sum is σ = 107574388992. Its totient is φ = 76838848800.

The previous prime is 91886456929. The next prime is 91886457041. The reversal of 91886456977 is 77965468819.

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

It is not a de Polignac number, because 91886456977 - 2¹⁹ = 91885932689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91886456927) 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, 160080649 + ... + 160081222.

It is an arithmetic number, because the mean of its divisors is an integer number (13446798624).

Almost surely, 2^91886456977 is an apocalyptic number.

It is an amenable number.

91886456977 is a deficient number, since it is larger than the sum of its proper divisors (15687932015).

91886456977 is a wasteful number, since it uses less digits than its factorization.

91886456977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320161919.

The product of its digits is 182891520, while the sum is 70.

The spelling of 91886456977 in words is "ninety-one billion, eight hundred eighty-six million, four hundred fifty-six thousand, nine hundred seventy-seven".