15550161505155 has 96 divisors (see below), whose sum is σ = 29098068255360. Its totient is φ = 7658575626240.

The previous prime is 15550161505127. The next prime is 15550161505187. The reversal of 15550161505155 is 55150516105551.

15550161505155 is a `hidden beast` number, since 15 + 5 + 5 + 0 + 1 + 615 + 0 + 5 + 15 + 5 = 666.

It is not a de Polignac number, because 15550161505155 - 2¹² = 15550161501059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 15550161505155.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 482054787 + ... + 482087043.

It is an arithmetic number, because the mean of its divisors is an integer number (303104877660).

Almost surely, 2^{15550161505155} is an apocalyptic number.

15550161505155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15550161505155 is a deficient number, since it is larger than the sum of its proper divisors (13547906750205).

15550161505155 is a wasteful number, since it uses less digits than its factorization.

15550161505155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48381 (or 48378 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 45.

The spelling of 15550161505155 in words is "fifteen trillion, five hundred fifty billion, one hundred sixty-one million, five hundred five thousand, one hundred fifty-five".