90919052805 has 64 divisors (see below), whose sum is σ = 169496064000. Its totient is φ = 40755532800.

The previous prime is 90919052737. The next prime is 90919052827. The reversal of 90919052805 is 50825091909.

It is a happy number.

It is not a de Polignac number, because 90919052805 - 2⁹ = 90919052293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2465896 + ... + 2502494.

It is an arithmetic number, because the mean of its divisors is an integer number (2648376000).

Almost surely, 2^90919052805 is an apocalyptic number.

It is an amenable number.

90919052805 is a deficient number, since it is larger than the sum of its proper divisors (78577011195).

90919052805 is a wasteful number, since it uses less digits than its factorization.

90919052805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37074.

The product of its (nonzero) digits is 291600, while the sum is 48.

The spelling of 90919052805 in words is "ninety billion, nine hundred nineteen million, fifty-two thousand, eight hundred five".