155560616060555 has 4 divisors (see below), whose sum is σ = 186672739272672. Its totient is φ = 124448492848440.

The previous prime is 155560616060543. The next prime is 155560616060557. The reversal of 155560616060555 is 555060616065551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155560616060555 - 2¹⁶ = 155560615995019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155560616060555.

It is not an unprimeable number, because it can be changed into a prime (155560616060557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15556061606051 + ... + 15556061606060.

It is an arithmetic number, because the mean of its divisors is an integer number (46668184818168).

Almost surely, 2^{155560616060555} is an apocalyptic number.

155560616060555 is a deficient number, since it is larger than the sum of its proper divisors (31112123212117).

155560616060555 is an equidigital number, since it uses as much as digits as its factorization.

155560616060555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31112123212116.

The product of its (nonzero) digits is 20250000, while the sum is 56.

The spelling of 155560616060555 in words is "one hundred fifty-five trillion, five hundred sixty billion, six hundred sixteen million, sixty thousand, five hundred fifty-five".