155510115555 has 16 divisors (see below), whose sum is σ = 248943895200. Its totient is φ = 82896158208.

The previous prime is 155510115521. The next prime is 155510115581. The reversal of 155510115555 is 555511015551.

It is not a de Polignac number, because 155510115555 - 2⁶ = 155510115491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2630422 + ... + 2688891.

It is an arithmetic number, because the mean of its divisors is an integer number (15558993450).

Almost surely, 2^155510115555 is an apocalyptic number.

155510115555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155510115555 is a deficient number, since it is larger than the sum of its proper divisors (93433779645).

155510115555 is a wasteful number, since it uses less digits than its factorization.

155510115555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321270.

The product of its (nonzero) digits is 78125, while the sum is 39.

The spelling of 155510115555 in words is "one hundred fifty-five billion, five hundred ten million, one hundred fifteen thousand, five hundred fifty-five".