91026011963 has 2 divisors, whose sum is σ = 91026011964. Its totient is φ = 91026011962.

The previous prime is 91026011959. The next prime is 91026012037. The reversal of 91026011963 is 36911062019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91026011963 - 2² = 91026011959 is a prime.

It is a super-2 number, since 2×91026011963² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91026010963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45513005981 + 45513005982.

It is an arithmetic number, because the mean of its divisors is an integer number (45513005982).

Almost surely, 2^91026011963 is an apocalyptic number.

91026011963 is a deficient number, since it is larger than the sum of its proper divisors (1).

91026011963 is an equidigital number, since it uses as much as digits as its factorization.

91026011963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 91026011963 in words is "ninety-one billion, twenty-six million, eleven thousand, nine hundred sixty-three".