15500552445 has 160 divisors (see below), whose sum is σ = 32608435200. Its totient is φ = 7041323520.

The previous prime is 15500552411. The next prime is 15500552453. The reversal of 15500552445 is 54425500551.

15500552445 is a `hidden beast` number, since 15 + 50 + 0 + 552 + 4 + 45 = 666.

It is not a de Polignac number, because 15500552445 - 2¹⁷ = 15500421373 is a prime.

It is a super-2 number, since 2×15500552445² (a number of 21 digits) contains 22 as substring.

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 159 ways as a sum of consecutive naturals, for example, 33478284 + ... + 33478746.

It is an arithmetic number, because the mean of its divisors is an integer number (203802720).

Almost surely, 2^15500552445 is an apocalyptic number.

15500552445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15500552445 is an abundant number, since it is smaller than the sum of its proper divisors (17107882755).

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

15500552445 is an equidigital number, since it uses as much as digits as its factorization.

15500552445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 15500552445 in words is "fifteen billion, five hundred million, five hundred fifty-two thousand, four hundred forty-five".