90235553002 has 64 divisors (see below), whose sum is σ = 169011360000. Its totient is φ = 35988158976.

The previous prime is 90235552993. The next prime is 90235553003. The reversal of 90235553002 is 20035553209.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (90235553003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 994449 + ... + 1081387.

It is an arithmetic number, because the mean of its divisors is an integer number (2640802500).

Almost surely, 2^90235553002 is an apocalyptic number.

90235553002 is a deficient number, since it is larger than the sum of its proper divisors (78775806998).

90235553002 is a wasteful number, since it uses less digits than its factorization.

90235553002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87068 (or 87054 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 34.

The spelling of 90235553002 in words is "ninety billion, two hundred thirty-five million, five hundred fifty-three thousand, two".