26470496681 has 2 divisors, whose sum is σ = 26470496682. Its totient is φ = 26470496680.

The previous prime is 26470496677. The next prime is 26470496683. The reversal of 26470496681 is 18669407462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21401056681 + 5069440000 = 146291^2 + 71200^2 .

It is a cyclic number.

It is not a de Polignac number, because 26470496681 - 2² = 26470496677 is a prime.

It is a super-2 number, since 2×26470496681² (a number of 22 digits) contains 22 as substring.

Together with 26470496683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26470496683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13235248340 + 13235248341.

It is an arithmetic number, because the mean of its divisors is an integer number (13235248341).

Almost surely, 2^26470496681 is an apocalyptic number.

It is an amenable number.

26470496681 is a deficient number, since it is larger than the sum of its proper divisors (1).

26470496681 is an equidigital number, since it uses as much as digits as its factorization.

26470496681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 26470496681 in words is "twenty-six billion, four hundred seventy million, four hundred ninety-six thousand, six hundred eighty-one".