2155456603405 has 32 divisors (see below), whose sum is σ = 2963807527680. Its totient is φ = 1474152307200.

The previous prime is 2155456603403. The next prime is 2155456603441. The reversal of 2155456603405 is 5043066545512.

It is not a de Polignac number, because 2155456603405 - 2¹ = 2155456603403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155456603403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115956522 + ... + 115975108.

It is an arithmetic number, because the mean of its divisors is an integer number (92618985240).

Almost surely, 2^{2155456603405} is an apocalyptic number.

It is an amenable number.

2155456603405 is a deficient number, since it is larger than the sum of its proper divisors (808350924275).

2155456603405 is a wasteful number, since it uses less digits than its factorization.

2155456603405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27109.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 2155456603405 in words is "two trillion, one hundred fifty-five billion, four hundred fifty-six million, six hundred three thousand, four hundred five".