2155631114653 has 4 divisors (see below), whose sum is σ = 2155881865500. Its totient is φ = 2155380363808.

The previous prime is 2155631114627. The next prime is 2155631114657. The reversal of 2155631114653 is 3564111365512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 555236600164 + 1600394514489 = 745142^2 + 1265067^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155631114653 - 2²¹ = 2155629017501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155631114657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125362528 + ... + 125379721.

It is an arithmetic number, because the mean of its divisors is an integer number (538970466375).

Almost surely, 2^{2155631114653} is an apocalyptic number.

It is an amenable number.

2155631114653 is a deficient number, since it is larger than the sum of its proper divisors (250750847).

2155631114653 is an equidigital number, since it uses as much as digits as its factorization.

2155631114653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250750846.

The product of its digits is 324000, while the sum is 43.

The spelling of 2155631114653 in words is "two trillion, one hundred fifty-five billion, six hundred thirty-one million, one hundred fourteen thousand, six hundred fifty-three".