26501886461 has 2 divisors, whose sum is σ = 26501886462. Its totient is φ = 26501886460.

The previous prime is 26501886431. The next prime is 26501886479. The reversal of 26501886461 is 16468810562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26501886436 + 25 = 162794^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26501886461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26501886431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250943230 + 13250943231.

It is an arithmetic number, because the mean of its divisors is an integer number (13250943231).

Almost surely, 2^26501886461 is an apocalyptic number.

It is an amenable number.

26501886461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26501886461 is an equidigital number, since it uses as much as digits as its factorization.

26501886461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 26501886461 in words is "twenty-six billion, five hundred one million, eight hundred eighty-six thousand, four hundred sixty-one".