2155434243294 has 16 divisors (see below), whose sum is σ = 4326101240832. Its totient is φ = 715939288728.

The previous prime is 2155434243283. The next prime is 2155434243371. The reversal of 2155434243294 is 4923424345512.

It is a happy number.

It is a congruent 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, 634696254 + ... + 634699649.

It is an arithmetic number, because the mean of its divisors is an integer number (270381327552).

Almost surely, 2^{2155434243294} is an apocalyptic number.

2155434243294 is an abundant number, since it is smaller than the sum of its proper divisors (2170666997538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155434243294 is a wasteful number, since it uses less digits than its factorization.

2155434243294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269396191.

The product of its digits is 4147200, while the sum is 48.

The spelling of 2155434243294 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-four million, two hundred forty-three thousand, two hundred ninety-four".