15550021675 has 12 divisors (see below), whose sum is σ = 19692284256. Its totient is φ = 12175335200.

The previous prime is 15550021649. The next prime is 15550021681. The reversal of 15550021675 is 57612005551.

15550021675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15550021675 - 2⁷ = 15550021547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6615856 + ... + 6618205.

It is an arithmetic number, because the mean of its divisors is an integer number (1641023688).

Almost surely, 2^15550021675 is an apocalyptic number.

15550021675 is a deficient number, since it is larger than the sum of its proper divisors (4142262581).

15550021675 is a wasteful number, since it uses less digits than its factorization.

15550021675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13234118 (or 13234113 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 15550021675 in words is "fifteen billion, five hundred fifty million, twenty-one thousand, six hundred seventy-five".