90885478373 has 2 divisors, whose sum is σ = 90885478374. Its totient is φ = 90885478372.

The previous prime is 90885478363. The next prime is 90885478379. The reversal of 90885478373 is 37387458809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51713943649 + 39171534724 = 227407^2 + 197918^2 .

It is a cyclic number.

It is not a de Polignac number, because 90885478373 - 2⁶ = 90885478309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90885478379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45442739186 + 45442739187.

It is an arithmetic number, because the mean of its divisors is an integer number (45442739187).

Almost surely, 2^90885478373 is an apocalyptic number.

It is an amenable number.

90885478373 is a deficient number, since it is larger than the sum of its proper divisors (1).

90885478373 is an equidigital number, since it uses as much as digits as its factorization.

90885478373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 90885478373 in words is "ninety billion, eight hundred eighty-five million, four hundred seventy-eight thousand, three hundred seventy-three".