90615203923 has 2 divisors, whose sum is σ = 90615203924. Its totient is φ = 90615203922.

The previous prime is 90615203911. The next prime is 90615203929. The reversal of 90615203923 is 32930251609.

It is a strong prime.

It is an emirp because it is prime and its reverse (32930251609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90615203923 - 2⁵ = 90615203891 is a prime.

It is a super-2 number, since 2×90615203923² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90615203929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45307601961 + 45307601962.

It is an arithmetic number, because the mean of its divisors is an integer number (45307601962).

Almost surely, 2^90615203923 is an apocalyptic number.

90615203923 is a deficient number, since it is larger than the sum of its proper divisors (1).

90615203923 is an equidigital number, since it uses as much as digits as its factorization.

90615203923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 90615203923 in words is "ninety billion, six hundred fifteen million, two hundred three thousand, nine hundred twenty-three".