2156127563 has 8 divisors (see below), whose sum is σ = 2163685200. Its totient is φ = 2148583968.

The previous prime is 2156127553. The next prime is 2156127577. The reversal of 2156127563 is 3657216512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2156127563 - 2⁶ = 2156127499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156127553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370208 + ... + 375986.

It is an arithmetic number, because the mean of its divisors is an integer number (270460650).

Almost surely, 2^2156127563 is an apocalyptic number.

2156127563 is a deficient number, since it is larger than the sum of its proper divisors (7557637).

2156127563 is an equidigital number, since it uses as much as digits as its factorization.

2156127563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7021.

The product of its digits is 75600, while the sum is 38.

The square root of 2156127563 is about 46434.1206765025. The cubic root of 2156127563 is about 1291.8878600108.

The spelling of 2156127563 in words is "two billion, one hundred fifty-six million, one hundred twenty-seven thousand, five hundred sixty-three".