90963911957 has 2 divisors, whose sum is σ = 90963911958. Its totient is φ = 90963911956.

The previous prime is 90963911903. The next prime is 90963911981. The reversal of 90963911957 is 75911936909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87801986596 + 3161925361 = 296314^2 + 56231^2 .

It is a cyclic number.

It is not a de Polignac number, because 90963911957 - 2¹⁴ = 90963895573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90963911896 and 90963911905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90963911657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45481955978 + 45481955979.

It is an arithmetic number, because the mean of its divisors is an integer number (45481955979).

Almost surely, 2^90963911957 is an apocalyptic number.

It is an amenable number.

90963911957 is a deficient number, since it is larger than the sum of its proper divisors (1).

90963911957 is an equidigital number, since it uses as much as digits as its factorization.

90963911957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4133430, while the sum is 59.

The spelling of 90963911957 in words is "ninety billion, nine hundred sixty-three million, nine hundred eleven thousand, nine hundred fifty-seven".