15554330090 has 64 divisors (see below), whose sum is σ = 31227910560. Its totient is φ = 5538570240.

The previous prime is 15554330087. The next prime is 15554330147. The reversal of 15554330090 is 9003345551.

It is a Cunningham number, because it is equal to 124717²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 1 + 15554330089 = 1^2 + 124717^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15554330090.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4133810 + ... + 4137570.

Almost surely, 2^15554330090 is an apocalyptic number.

15554330090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15554330090 is an abundant number, since it is smaller than the sum of its proper divisors (15673580470).

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

15554330090 is a wasteful number, since it uses less digits than its factorization.

15554330090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 15554330090 in words is "fifteen billion, five hundred fifty-four million, three hundred thirty thousand, ninety".