2656631273 has 4 divisors (see below), whose sum is σ = 2742329088. Its totient is φ = 2570933460.

The previous prime is 2656631251. The next prime is 2656631287. The reversal of 2656631273 is 3721366562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2656631273 - 2⁶ = 2656631209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2656631273.

It is not an unprimeable number, because it can be changed into a prime (2656631473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42848861 + ... + 42848922.

It is an arithmetic number, because the mean of its divisors is an integer number (685582272).

Almost surely, 2^2656631273 is an apocalyptic number.

It is an amenable number.

2656631273 is a deficient number, since it is larger than the sum of its proper divisors (85697815).

2656631273 is an equidigital number, since it uses as much as digits as its factorization.

2656631273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85697814.

The product of its digits is 272160, while the sum is 41.

The square root of 2656631273 is about 51542.5190789119. The cubic root of 2656631273 is about 1384.9808236733.

The spelling of 2656631273 in words is "two billion, six hundred fifty-six million, six hundred thirty-one thousand, two hundred seventy-three".