2155630556323 has 4 divisors (see below), whose sum is σ = 2156009874088. Its totient is φ = 2155251238560.

The previous prime is 2155630556239. The next prime is 2155630556363. The reversal of 2155630556323 is 3236550365512.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155630556323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155630556363) 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, 189650358 + ... + 189661723.

It is an arithmetic number, because the mean of its divisors is an integer number (539002468522).

Almost surely, 2^{2155630556323} is an apocalyptic number.

2155630556323 is a deficient number, since it is larger than the sum of its proper divisors (379317765).

2155630556323 is an equidigital number, since it uses as much as digits as its factorization.

2155630556323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379317764.

The product of its (nonzero) digits is 2430000, while the sum is 46.

The spelling of 2155630556323 in words is "two trillion, one hundred fifty-five billion, six hundred thirty million, five hundred fifty-six thousand, three hundred twenty-three".