90635230540 has 24 divisors (see below), whose sum is σ = 192296194272. Its totient is φ = 35880337920.

The previous prime is 90635230513. The next prime is 90635230547. The reversal of 90635230540 is 4503253609.

It is a self number, because there is not a number n which added to its sum of digits gives 90635230540.

It is not an unprimeable number, because it can be changed into a prime (90635230547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23357656 + ... + 23361535.

It is an arithmetic number, because the mean of its divisors is an integer number (8012341428).

Almost surely, 2^90635230540 is an apocalyptic number.

It is an amenable number.

90635230540 is an abundant number, since it is smaller than the sum of its proper divisors (101660963732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90635230540 is a wasteful number, since it uses less digits than its factorization.

90635230540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46719297 (or 46719295 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 90635230540 in words is "ninety billion, six hundred thirty-five million, two hundred thirty thousand, five hundred forty".