90073613507 has 2 divisors, whose sum is σ = 90073613508. Its totient is φ = 90073613506.

The previous prime is 90073613503. The next prime is 90073613549. The reversal of 90073613507 is 70531637009.

It is a weak prime.

It is an emirp because it is prime and its reverse (70531637009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90073613507 - 2² = 90073613503 is a prime.

It is a super-2 number, since 2×90073613507² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90073613503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45036806753 + 45036806754.

It is an arithmetic number, because the mean of its divisors is an integer number (45036806754).

Almost surely, 2^90073613507 is an apocalyptic number.

90073613507 is a deficient number, since it is larger than the sum of its proper divisors (1).

90073613507 is an equidigital number, since it uses as much as digits as its factorization.

90073613507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 41.

The spelling of 90073613507 in words is "ninety billion, seventy-three million, six hundred thirteen thousand, five hundred seven".