91022864047 has 2 divisors, whose sum is σ = 91022864048. Its totient is φ = 91022864046.

The previous prime is 91022864033. The next prime is 91022864071. The reversal of 91022864047 is 74046822019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91022864047 - 2²⁷ = 90888646319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91022863994 and 91022864012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91022864147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45511432023 + 45511432024.

It is an arithmetic number, because the mean of its divisors is an integer number (45511432024).

Almost surely, 2^91022864047 is an apocalyptic number.

91022864047 is a deficient number, since it is larger than the sum of its proper divisors (1).

91022864047 is an equidigital number, since it uses as much as digits as its factorization.

91022864047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 91022864047 in words is "ninety-one billion, twenty-two million, eight hundred sixty-four thousand, forty-seven".