2556610111301 has 4 divisors (see below), whose sum is σ = 2557472959392. Its totient is φ = 2555747263212.

The previous prime is 2556610111261. The next prime is 2556610111387. The reversal of 2556610111301 is 1031110166552.

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 2556610111301 - 2³⁸ = 2281732204357 is a prime.

It is a super-2 number, since 2×2556610111301² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556610111801) 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, 431419601 + ... + 431425526.

It is an arithmetic number, because the mean of its divisors is an integer number (639368239848).

Almost surely, 2^{2556610111301} is an apocalyptic number.

It is an amenable number.

2556610111301 is a deficient number, since it is larger than the sum of its proper divisors (862848091).

2556610111301 is an equidigital number, since it uses as much as digits as its factorization.

2556610111301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862848090.

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 2556610111301 its reverse (1031110166552), we get a palindrome (3587720277853).

The spelling of 2556610111301 in words is "two trillion, five hundred fifty-six billion, six hundred ten million, one hundred eleven thousand, three hundred one".