15550022730 has 64 divisors (see below), whose sum is σ = 41270560128. Its totient is φ = 3718056960.

The previous prime is 15550022729. The next prime is 15550022771. The reversal of 15550022730 is 3722005551.

15550022730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 298659 + ... + 346838.

It is an arithmetic number, because the mean of its divisors is an integer number (644852502).

Almost surely, 2^15550022730 is an apocalyptic number.

15550022730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15550022730 is an abundant number, since it is smaller than the sum of its proper divisors (25720537398).

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

15550022730 is a wasteful number, since it uses less digits than its factorization.

15550022730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645591.

The product of its (nonzero) digits is 10500, while the sum is 30.

The spelling of 15550022730 in words is "fifteen billion, five hundred fifty million, twenty-two thousand, seven hundred thirty".