90759954391 has 2 divisors, whose sum is σ = 90759954392. Its totient is φ = 90759954390.

The previous prime is 90759954323. The next prime is 90759954409. The reversal of 90759954391 is 19345995709.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90759954391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90759954301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45379977195 + 45379977196.

It is an arithmetic number, because the mean of its divisors is an integer number (45379977196).

Almost surely, 2^90759954391 is an apocalyptic number.

90759954391 is a deficient number, since it is larger than the sum of its proper divisors (1).

90759954391 is an equidigital number, since it uses as much as digits as its factorization.

90759954391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13778100, while the sum is 61.

The spelling of 90759954391 in words is "ninety billion, seven hundred fifty-nine million, nine hundred fifty-four thousand, three hundred ninety-one".