2156442362003 has 4 divisors (see below), whose sum is σ = 2156751447720. Its totient is φ = 2156133276288.

The previous prime is 2156442361973. The next prime is 2156442362057. The reversal of 2156442362003 is 3002632446512.

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

It is a cyclic number.

It is not a de Polignac number, because 2156442362003 - 2⁶ = 2156442361939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126442362003) 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, 154532393 + ... + 154546346.

It is an arithmetic number, because the mean of its divisors is an integer number (539187861930).

Almost surely, 2^{2156442362003} is an apocalyptic number.

2156442362003 is a deficient number, since it is larger than the sum of its proper divisors (309085717).

2156442362003 is an equidigital number, since it uses as much as digits as its factorization.

2156442362003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309085716.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 2156442362003 in words is "two trillion, one hundred fifty-six billion, four hundred forty-two million, three hundred sixty-two thousand, three".