90542534212 has 48 divisors (see below), whose sum is σ = 172970784000. Its totient is φ = 41218594560.

The previous prime is 90542534209. The next prime is 90542534219. The reversal of 90542534212 is 21243524509.

It is not an unprimeable number, because it can be changed into a prime (90542534219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4298787 + ... + 4319797.

It is an arithmetic number, because the mean of its divisors is an integer number (3603558000).

Almost surely, 2^90542534212 is an apocalyptic number.

It is an amenable number.

90542534212 is a deficient number, since it is larger than the sum of its proper divisors (82428249788).

90542534212 is a wasteful number, since it uses less digits than its factorization.

90542534212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22156 (or 22154 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 90542534212 in words is "ninety billion, five hundred forty-two million, five hundred thirty-four thousand, two hundred twelve".