2155434243297 has 8 divisors (see below), whose sum is σ = 2875546164480. Its totient is φ = 1436139242160.

The previous prime is 2155434243283. The next prime is 2155434243371. The reversal of 2155434243297 is 7923424345512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2155434243297 - 2⁷ = 2155434243169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155434243227) 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, 204223854 + ... + 204234407.

It is an arithmetic number, because the mean of its divisors is an integer number (359443270560).

Almost surely, 2^{2155434243297} is an apocalyptic number.

It is an amenable number.

2155434243297 is a deficient number, since it is larger than the sum of its proper divisors (720111921183).

2155434243297 is a wasteful number, since it uses less digits than its factorization.

2155434243297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408460023.

The product of its digits is 7257600, while the sum is 51.

The spelling of 2155434243297 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-four million, two hundred forty-three thousand, two hundred ninety-seven".