90591393107 has 2 divisors, whose sum is σ = 90591393108. Its totient is φ = 90591393106.

The previous prime is 90591393091. The next prime is 90591393127. The reversal of 90591393107 is 70139319509.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90591393107 - 2⁴ = 90591393091 is a prime.

It is a super-2 number, since 2×90591393107² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90591393127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45295696553 + 45295696554.

It is an arithmetic number, because the mean of its divisors is an integer number (45295696554).

Almost surely, 2^90591393107 is an apocalyptic number.

90591393107 is a deficient number, since it is larger than the sum of its proper divisors (1).

90591393107 is an equidigital number, since it uses as much as digits as its factorization.

90591393107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 229635, while the sum is 47.

The spelling of 90591393107 in words is "ninety billion, five hundred ninety-one million, three hundred ninety-three thousand, one hundred seven".