90542013619 has 2 divisors, whose sum is σ = 90542013620. Its totient is φ = 90542013618.

The previous prime is 90542013599. The next prime is 90542013623. The reversal of 90542013619 is 91631024509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90542013619 - 2⁷ = 90542013491 is a prime.

It is a super-2 number, since 2×90542013619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90542013649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45271006809 + 45271006810.

It is an arithmetic number, because the mean of its divisors is an integer number (45271006810).

Almost surely, 2^90542013619 is an apocalyptic number.

90542013619 is a deficient number, since it is larger than the sum of its proper divisors (1).

90542013619 is an equidigital number, since it uses as much as digits as its factorization.

90542013619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 90542013619 in words is "ninety billion, five hundred forty-two million, thirteen thousand, six hundred nineteen".