2155355334123 has 16 divisors (see below), whose sum is σ = 2902343700000. Its totient is φ = 1422636076800.

The previous prime is 2155355334053. The next prime is 2155355334131. The reversal of 2155355334123 is 3214335535512.

It is not a de Polignac number, because 2155355334123 - 2⁹ = 2155355333611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155355334163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13497753 + ... + 13656501.

It is an arithmetic number, because the mean of its divisors is an integer number (181396481250).

Almost surely, 2^{2155355334123} is an apocalyptic number.

2155355334123 is a deficient number, since it is larger than the sum of its proper divisors (746988365877).

2155355334123 is a wasteful number, since it uses less digits than its factorization.

2155355334123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203662.

The product of its digits is 810000, while the sum is 42.

The spelling of 2155355334123 in words is "two trillion, one hundred fifty-five billion, three hundred fifty-five million, three hundred thirty-four thousand, one hundred twenty-three".