26134891477 has 2 divisors, whose sum is σ = 26134891478. Its totient is φ = 26134891476.

The previous prime is 26134891463. The next prime is 26134891483. The reversal of 26134891477 is 77419843162.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21220040241 + 4914851236 = 145671^2 + 70106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26134891477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26134891177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13067445738 + 13067445739.

It is an arithmetic number, because the mean of its divisors is an integer number (13067445739).

Almost surely, 2^26134891477 is an apocalyptic number.

It is an amenable number.

26134891477 is a deficient number, since it is larger than the sum of its proper divisors (1).

26134891477 is an equidigital number, since it uses as much as digits as its factorization.

26134891477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The spelling of 26134891477 in words is "twenty-six billion, one hundred thirty-four million, eight hundred ninety-one thousand, four hundred seventy-seven".