2155432505155 has 8 divisors (see below), whose sum is σ = 2586529698912. Its totient is φ = 1724338875648.

The previous prime is 2155432505081. The next prime is 2155432505167. The reversal of 2155432505155 is 5515052345512.

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 2155432505155 - 2⁷ = 2155432505027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696499 + ... + 2189971.

It is an arithmetic number, because the mean of its divisors is an integer number (323316212364).

Almost surely, 2^{2155432505155} is an apocalyptic number.

2155432505155 is a deficient number, since it is larger than the sum of its proper divisors (431097193757).

2155432505155 is a wasteful number, since it uses less digits than its factorization.

2155432505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782125.

The product of its (nonzero) digits is 750000, while the sum is 43.

The spelling of 2155432505155 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-two million, five hundred five thousand, one hundred fifty-five".