90540057373 has 2 divisors, whose sum is σ = 90540057374. Its totient is φ = 90540057372.

The previous prime is 90540057331. The next prime is 90540057383. The reversal of 90540057373 is 37375004509.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70723019844 + 19817037529 = 265938^2 + 140773^2 .

It is a cyclic number.

It is not a de Polignac number, because 90540057373 - 2⁹ = 90540056861 is a prime.

It is a super-2 number, since 2×90540057373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90540057383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45270028686 + 45270028687.

It is an arithmetic number, because the mean of its divisors is an integer number (45270028687).

Almost surely, 2^90540057373 is an apocalyptic number.

It is an amenable number.

90540057373 is a deficient number, since it is larger than the sum of its proper divisors (1).

90540057373 is an equidigital number, since it uses as much as digits as its factorization.

90540057373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 43.

The spelling of 90540057373 in words is "ninety billion, five hundred forty million, fifty-seven thousand, three hundred seventy-three".