2155456614563 has 32 divisors (see below), whose sum is σ = 2706118656000. Its totient is φ = 1673980662816.

The previous prime is 2155456614433. The next prime is 2155456614569. The reversal of 2155456614563 is 3654166545512.

It is not a de Polignac number, because 2155456614563 - 2⁸ = 2155456614307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155456614569) 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, 26263370 + ... + 26345312.

It is an arithmetic number, because the mean of its divisors is an integer number (84566208000).

Almost surely, 2^{2155456614563} is an apocalyptic number.

2155456614563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2155456614563 is a deficient number, since it is larger than the sum of its proper divisors (550662041437).

2155456614563 is a wasteful number, since it uses less digits than its factorization.

2155456614563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90591.

The product of its digits is 12960000, while the sum is 53.

The spelling of 2155456614563 in words is "two trillion, one hundred fifty-five billion, four hundred fifty-six million, six hundred fourteen thousand, five hundred sixty-three".