90493597357 has 2 divisors, whose sum is σ = 90493597358. Its totient is φ = 90493597356.

The previous prime is 90493597349. The next prime is 90493597367. The reversal of 90493597357 is 75379539409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66684798756 + 23808798601 = 258234^2 + 154301^2 .

It is an emirp because it is prime and its reverse (75379539409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90493597357 - 2³ = 90493597349 is a prime.

It is a super-2 number, since 2×90493597357² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90493597295 and 90493597304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90493597307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45246798678 + 45246798679.

It is an arithmetic number, because the mean of its divisors is an integer number (45246798679).

Almost surely, 2^90493597357 is an apocalyptic number.

It is an amenable number.

90493597357 is a deficient number, since it is larger than the sum of its proper divisors (1).

90493597357 is an equidigital number, since it uses as much as digits as its factorization.

90493597357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32148900, while the sum is 61.

The spelling of 90493597357 in words is "ninety billion, four hundred ninety-three million, five hundred ninety-seven thousand, three hundred fifty-seven".