91057036027 has 16 divisors (see below), whose sum is σ = 93403537920. Its totient is φ = 88721281152.

The previous prime is 91057035977. The next prime is 91057036067. The reversal of 91057036027 is 72063075019.

It is a cyclic number.

It is not a de Polignac number, because 91057036027 - 2⁷ = 91057035899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91057036067) 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, 44656674 + ... + 44658712.

It is an arithmetic number, because the mean of its divisors is an integer number (5837721120).

Almost surely, 2^91057036027 is an apocalyptic number.

91057036027 is a deficient number, since it is larger than the sum of its proper divisors (2346501893).

91057036027 is a wasteful number, since it uses less digits than its factorization.

91057036027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 91057036027 in words is "ninety-one billion, fifty-seven million, thirty-six thousand, twenty-seven".