90010044820 has 48 divisors (see below), whose sum is σ = 202341988800. Its totient is φ = 33530941440.

The previous prime is 90010044809. The next prime is 90010044829. The reversal of 90010044820 is 2844001009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90010044829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1984941 + ... + 2029780.

It is an arithmetic number, because the mean of its divisors is an integer number (4215458100).

Almost surely, 2^90010044820 is an apocalyptic number.

It is an amenable number.

90010044820 is an abundant number, since it is smaller than the sum of its proper divisors (112331943980).

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

90010044820 is a wasteful number, since it uses less digits than its factorization.

90010044820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014808 (or 4014806 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 90010044820 its reverse (2844001009), we get a palindrome (92854045829).

The spelling of 90010044820 in words is "ninety billion, ten million, forty-four thousand, eight hundred twenty".