90450155803 has 6 divisors (see below), whose sum is σ = 105217528236. Its totient is φ = 77528704932.

The previous prime is 90450155773. The next prime is 90450155837. The reversal of 90450155803 is 30855105409.

It is not a de Polignac number, because 90450155803 - 2⁵ = 90450155771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90450155503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 922960725 + ... + 922960822.

It is an arithmetic number, because the mean of its divisors is an integer number (17536254706).

Almost surely, 2^90450155803 is an apocalyptic number.

90450155803 is a deficient number, since it is larger than the sum of its proper divisors (14767372433).

90450155803 is a wasteful number, since it uses less digits than its factorization.

90450155803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845921561 (or 1845921554 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 90450155803 in words is "ninety billion, four hundred fifty million, one hundred fifty-five thousand, eight hundred three".