91376282878 has 16 divisors (see below), whose sum is σ = 138222418176. Its totient is φ = 45303672960.

The previous prime is 91376282873. The next prime is 91376282891. The reversal of 91376282878 is 87828267319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91376282873) 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, 262551 + ... + 501682.

It is an arithmetic number, because the mean of its divisors is an integer number (8638901136).

Almost surely, 2^91376282878 is an apocalyptic number.

91376282878 is a deficient number, since it is larger than the sum of its proper divisors (46846135298).

91376282878 is a wasteful number, since it uses less digits than its factorization.

91376282878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764739.

The product of its digits is 16257024, while the sum is 61.

The spelling of 91376282878 in words is "ninety-one billion, three hundred seventy-six million, two hundred eighty-two thousand, eight hundred seventy-eight".