15530530155 has 48 divisors (see below), whose sum is σ = 29379753504. Its totient is φ = 6983262720.

The previous prime is 15530530151. The next prime is 15530530177. The reversal of 15530530155 is 55103503551.

It is not a de Polignac number, because 15530530155 - 2² = 15530530151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15530530151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128362 + ... + 218031.

It is an arithmetic number, because the mean of its divisors is an integer number (612078198).

Almost surely, 2^15530530155 is an apocalyptic number.

15530530155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15530530155 is a deficient number, since it is larger than the sum of its proper divisors (13849223349).

15530530155 is a wasteful number, since it uses less digits than its factorization.

15530530155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346476 (or 346469 counting only the distinct ones).

The product of its (nonzero) digits is 28125, while the sum is 33.

The spelling of 15530530155 in words is "fifteen billion, five hundred thirty million, five hundred thirty thousand, one hundred fifty-five".