26515416461 has 2 divisors, whose sum is σ = 26515416462. Its totient is φ = 26515416460.

The previous prime is 26515416401. The next prime is 26515416479. The reversal of 26515416461 is 16461451562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22102471561 + 4412944900 = 148669^2 + 66430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26515416461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26515416401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13257708230 + 13257708231.

It is an arithmetic number, because the mean of its divisors is an integer number (13257708231).

Almost surely, 2^26515416461 is an apocalyptic number.

It is an amenable number.

26515416461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26515416461 is an equidigital number, since it uses as much as digits as its factorization.

26515416461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The spelling of 26515416461 in words is "twenty-six billion, five hundred fifteen million, four hundred sixteen thousand, four hundred sixty-one".