90131772910546 has 16 divisors (see below), whose sum is σ = 143166293321184. Its totient is φ = 42410261450304.

The previous prime is 90131772910537. The next prime is 90131772910547. The reversal of 90131772910546 is 64501927713109.

It is not an unprimeable number, because it can be changed into a prime (90131772910547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146266380 + ... + 146881303.

It is an arithmetic number, because the mean of its divisors is an integer number (8947893332574).

Almost surely, 2^{90131772910546} is an apocalyptic number.

90131772910546 is a deficient number, since it is larger than the sum of its proper divisors (53034520410638).

90131772910546 is a wasteful number, since it uses less digits than its factorization.

90131772910546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293156745.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 90131772910546 in words is "ninety trillion, one hundred thirty-one billion, seven hundred seventy-two million, nine hundred ten thousand, five hundred forty-six".