26474319481 has 2 divisors, whose sum is σ = 26474319482. Its totient is φ = 26474319480.

The previous prime is 26474319451. The next prime is 26474319563. The reversal of 26474319481 is 18491347462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23261130256 + 3213189225 = 152516^2 + 56685^2 .

It is a cyclic number.

It is not a de Polignac number, because 26474319481 - 2⁵ = 26474319449 is a prime.

It is a super-2 number, since 2×26474319481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26474319451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13237159740 + 13237159741.

It is an arithmetic number, because the mean of its divisors is an integer number (13237159741).

Almost surely, 2^26474319481 is an apocalyptic number.

It is an amenable number.

26474319481 is a deficient number, since it is larger than the sum of its proper divisors (1).

26474319481 is an equidigital number, since it uses as much as digits as its factorization.

26474319481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The spelling of 26474319481 in words is "twenty-six billion, four hundred seventy-four million, three hundred nineteen thousand, four hundred eighty-one".