90618866144232 has 32 divisors (see below), whose sum is σ = 239873469206400. Its totient is φ = 28429448201984.

The previous prime is 90618866144231. The next prime is 90618866144281. The reversal of 90618866144232 is 23244166881609.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90618866144231) 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, 111052531632 + ... + 111052532447.

It is an arithmetic number, because the mean of its divisors is an integer number (7496045912700).

Almost surely, 2^{90618866144232} is an apocalyptic number.

It is an amenable number.

90618866144232 is an abundant number, since it is smaller than the sum of its proper divisors (149254603062168).

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

90618866144232 is a wasteful number, since it uses less digits than its factorization.

90618866144232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222105064105 (or 222105064101 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 60.

The spelling of 90618866144232 in words is "ninety trillion, six hundred eighteen billion, eight hundred sixty-six million, one hundred forty-four thousand, two hundred thirty-two".