90542421208 has 16 divisors (see below), whose sum is σ = 170508384000. Its totient is φ = 45073518816.

The previous prime is 90542421173. The next prime is 90542421227. The reversal of 90542421208 is 80212424509.

It is a congruent 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, 24709528 + ... + 24713191.

It is an arithmetic number, because the mean of its divisors is an integer number (10656774000).

Almost surely, 2^90542421208 is an apocalyptic number.

It is an amenable number.

90542421208 is a deficient number, since it is larger than the sum of its proper divisors (79965962792).

90542421208 is a wasteful number, since it uses less digits than its factorization.

90542421208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49422954 (or 49422950 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 90542421208 in words is "ninety billion, five hundred forty-two million, four hundred twenty-one thousand, two hundred eight".