26010451861 has 2 divisors, whose sum is σ = 26010451862. Its totient is φ = 26010451860.

The previous prime is 26010451849. The next prime is 26010451871. The reversal of 26010451861 is 16815401062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20994271236 + 5016180625 = 144894^2 + 70825^2 .

It is a cyclic number.

It is not a de Polignac number, because 26010451861 - 2⁵ = 26010451829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26010451801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13005225930 + 13005225931.

It is an arithmetic number, because the mean of its divisors is an integer number (13005225931).

Almost surely, 2^26010451861 is an apocalyptic number.

It is an amenable number.

26010451861 is a deficient number, since it is larger than the sum of its proper divisors (1).

26010451861 is an equidigital number, since it uses as much as digits as its factorization.

26010451861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 26010451861 in words is "twenty-six billion, ten million, four hundred fifty-one thousand, eight hundred sixty-one".