26270556761 has 4 divisors (see below), whose sum is σ = 26271268992. Its totient is φ = 26269844532.

The previous prime is 26270556757. The next prime is 26270556769. The reversal of 26270556761 is 16765507262.

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 26270556761 - 2² = 26270556757 is a prime.

It is a super-2 number, since 2×26270556761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26270556769) 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, 297581 + ... + 375626.

It is an arithmetic number, because the mean of its divisors is an integer number (6567817248).

Almost surely, 2^26270556761 is an apocalyptic number.

It is an amenable number.

26270556761 is a deficient number, since it is larger than the sum of its proper divisors (712231).

26270556761 is an equidigital number, since it uses as much as digits as its factorization.

26270556761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712230.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 26270556761 in words is "twenty-six billion, two hundred seventy million, five hundred fifty-six thousand, seven hundred sixty-one".