155242566155 has 8 divisors (see below), whose sum is σ = 186592038000. Its totient is φ = 123993413856.

The previous prime is 155242566151. The next prime is 155242566179. The reversal of 155242566155 is 551665242551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155242566155 - 2² = 155242566151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155242566151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25076480 + ... + 25082669.

It is an arithmetic number, because the mean of its divisors is an integer number (23324004750).

Almost surely, 2^155242566155 is an apocalyptic number.

155242566155 is a deficient number, since it is larger than the sum of its proper divisors (31349471845).

155242566155 is an equidigital number, since it uses as much as digits as its factorization.

155242566155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50159773.

The product of its digits is 1800000, while the sum is 47.

The spelling of 155242566155 in words is "one hundred fifty-five billion, two hundred forty-two million, five hundred sixty-six thousand, one hundred fifty-five".