26551610761 has 4 divisors (see below), whose sum is σ = 28594042372. Its totient is φ = 24509179152.

The previous prime is 26551610741. The next prime is 26551610773. The reversal of 26551610761 is 16701615562.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7247287161 + 19304323600 = 85131^2 + 138940^2 .

It is a cyclic number.

It is not a de Polignac number, because 26551610761 - 2³³ = 17961676169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26551610741) 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, 1021215786 + ... + 1021215811.

It is an arithmetic number, because the mean of its divisors is an integer number (7148510593).

Almost surely, 2^26551610761 is an apocalyptic number.

It is an amenable number.

26551610761 is a deficient number, since it is larger than the sum of its proper divisors (2042431611).

26551610761 is a wasteful number, since it uses less digits than its factorization.

26551610761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042431610.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 26551610761 in words is "twenty-six billion, five hundred fifty-one million, six hundred ten thousand, seven hundred sixty-one".