91022053291 has 16 divisors (see below), whose sum is σ = 100568258560. Its totient is φ = 81849670560.

The previous prime is 91022053247. The next prime is 91022053307. The reversal of 91022053291 is 19235022019.

It is a cyclic number.

It is not a de Polignac number, because 91022053291 - 2¹⁷ = 91021922219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91022053691) 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, 2955 + ... + 426676.

It is an arithmetic number, because the mean of its divisors is an integer number (6285516160).

Almost surely, 2^91022053291 is an apocalyptic number.

91022053291 is a deficient number, since it is larger than the sum of its proper divisors (9546205269).

91022053291 is a wasteful number, since it uses less digits than its factorization.

91022053291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430066.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 91022053291 in words is "ninety-one billion, twenty-two million, fifty-three thousand, two hundred ninety-one".