2256155655451 has 4 divisors (see below), whose sum is σ = 2256574009752. Its totient is φ = 2255737301152.

The previous prime is 2256155655431. The next prime is 2256155655521. The reversal of 2256155655451 is 1545565516522.

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 2256155655451 - 2¹³ = 2256155647259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256155655431) 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, 209169061 + ... + 209179846.

It is an arithmetic number, because the mean of its divisors is an integer number (564143502438).

Almost surely, 2^{2256155655451} is an apocalyptic number.

2256155655451 is a deficient number, since it is larger than the sum of its proper divisors (418354301).

2256155655451 is an equidigital number, since it uses as much as digits as its factorization.

2256155655451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418354300.

The product of its digits is 9000000, while the sum is 52.

The spelling of 2256155655451 in words is "two trillion, two hundred fifty-six billion, one hundred fifty-five million, six hundred fifty-five thousand, four hundred fifty-one".