26974798577 has 2 divisors, whose sum is σ = 26974798578. Its totient is φ = 26974798576.

The previous prime is 26974798553. The next prime is 26974798619. The reversal of 26974798577 is 77589747962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26678648896 + 296149681 = 163336^2 + 17209^2 .

It is a cyclic number.

It is not a de Polignac number, because 26974798577 - 2¹⁴ = 26974782193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26974798577.

It is not a weakly prime, because it can be changed into another prime (26974798537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13487399288 + 13487399289.

It is an arithmetic number, because the mean of its divisors is an integer number (13487399289).

Almost surely, 2^26974798577 is an apocalyptic number.

It is an amenable number.

26974798577 is a deficient number, since it is larger than the sum of its proper divisors (1).

26974798577 is an equidigital number, since it uses as much as digits as its factorization.

26974798577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373403520, while the sum is 71.

The spelling of 26974798577 in words is "twenty-six billion, nine hundred seventy-four million, seven hundred ninety-eight thousand, five hundred seventy-seven".