90450155802 has 8 divisors (see below), whose sum is σ = 180900311616. Its totient is φ = 30150051932.

The previous prime is 90450155773. The next prime is 90450155837. The reversal of 90450155802 is 20855105409.

It is a sphenic number, since it is the product of 3 distinct primes.

90450155802 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7537512978 + ... + 7537512989.

It is an arithmetic number, because the mean of its divisors is an integer number (22612538952).

Almost surely, 2^90450155802 is an apocalyptic number.

90450155802 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90450155802 is a wasteful number, since it uses less digits than its factorization.

90450155802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15075025972.

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 90450155802 in words is "ninety billion, four hundred fifty million, one hundred fifty-five thousand, eight hundred two".