90421560382100 has 36 divisors (see below), whose sum is σ = 196978267742844. Its totient is φ = 36027890196480.

The previous prime is 90421560382079. The next prime is 90421560382159. The reversal of 90421560382100 is 128306512409.

It can be written as a sum of positive squares in 6 ways, for example, as 2692336215556 + 87729224166544 = 1640834^2 + 9366388^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1759148627 + ... + 1759200026.

Almost surely, 2^{90421560382100} is an apocalyptic number.

It is an amenable number.

90421560382100 is an abundant number, since it is smaller than the sum of its proper divisors (106556707360744).

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

90421560382100 is a wasteful number, since it uses less digits than its factorization.

90421560382100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518348924 (or 3518348917 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

Adding to 90421560382100 its reverse (128306512409), we get a palindrome (90549866894509).

The spelling of 90421560382100 in words is "ninety trillion, four hundred twenty-one billion, five hundred sixty million, three hundred eighty-two thousand, one hundred".