90208155500 has 48 divisors (see below), whose sum is σ = 203369956608. Its totient is φ = 34919280000.

The previous prime is 90208155463. The next prime is 90208155503. The reversal of 90208155500 is 555180209.

It is a super-2 number, since 2×90208155500² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90208155503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2894441 + ... + 2925440.

It is an arithmetic number, because the mean of its divisors is an integer number (4236874096).

Almost surely, 2^90208155500 is an apocalyptic number.

It is an amenable number.

90208155500 is an abundant number, since it is smaller than the sum of its proper divisors (113161801108).

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

90208155500 is a wasteful number, since it uses less digits than its factorization.

90208155500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5819931 (or 5819919 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 90208155500 in words is "ninety billion, two hundred eight million, one hundred fifty-five thousand, five hundred".