155111050155 has 8 divisors (see below), whose sum is σ = 248177680272. Its totient is φ = 82725893408.

The previous prime is 155111050151. The next prime is 155111050163. The reversal of 155111050155 is 551050111551.

It is a happy number.

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 155111050155 - 2² = 155111050151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155111050151) 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, 5170368324 + ... + 5170368353.

It is an arithmetic number, because the mean of its divisors is an integer number (31022210034).

Almost surely, 2^155111050155 is an apocalyptic number.

155111050155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155111050155 is a deficient number, since it is larger than the sum of its proper divisors (93066630117).

155111050155 is a wasteful number, since it uses less digits than its factorization.

155111050155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340736685.

The product of its (nonzero) digits is 3125, while the sum is 30.

The spelling of 155111050155 in words is "one hundred fifty-five billion, one hundred eleven million, fifty thousand, one hundred fifty-five".