91374555827 has 8 divisors (see below), whose sum is σ = 94326115200.
Its totient is φ = 88423246080.
The previous prime is 91374555821. The next prime is 91374555851. The reversal of 91374555827 is 72855547319.
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 2k-91374555827 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (91374555821) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934553 + ... + 1027685.
It is an arithmetic number, because the mean of its divisors is an integer number (11790764400).
Almost surely, 291374555827 is an apocalyptic number.
91374555827 is a deficient number, since it is larger than the sum of its proper divisors (2951559373).
91374555827 is a wasteful number, since it uses less digits than its factorization.
91374555827 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 124813.
The product of its digits is 10584000, while the sum is 56.
The spelling of 91374555827 in words is "ninety-one billion, three hundred seventy-four million, five hundred fifty-five thousand, eight hundred twenty-seven".