90360515521 has 4 divisors (see below), whose sum is σ = 90364356544. Its totient is φ = 90356674500.

The previous prime is 90360515519. The next prime is 90360515543. The reversal of 90360515521 is 12551506309.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90360515521 - 2¹ = 90360515519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90360513521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885005 + ... + 1932346.

It is an arithmetic number, because the mean of its divisors is an integer number (22591089136).

Almost surely, 2^90360515521 is an apocalyptic number.

It is an amenable number.

90360515521 is a deficient number, since it is larger than the sum of its proper divisors (3841023).

90360515521 is a wasteful number, since it uses less digits than its factorization.

90360515521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841022.

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 90360515521 in words is "ninety billion, three hundred sixty million, five hundred fifteen thousand, five hundred twenty-one".