26670949673 has 2 divisors, whose sum is σ = 26670949674. Its totient is φ = 26670949672.

The previous prime is 26670949631. The next prime is 26670949693. The reversal of 26670949673 is 37694907662.

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., 15057007849 + 11613941824 = 122707^2 + 107768^2 .

It is a cyclic number.

It is not a de Polignac number, because 26670949673 - 2⁶ = 26670949609 is a prime.

It is a super-2 number, since 2×26670949673² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26670949693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13335474836 + 13335474837.

It is an arithmetic number, because the mean of its divisors is an integer number (13335474837).

Almost surely, 2^26670949673 is an apocalyptic number.

It is an amenable number.

26670949673 is a deficient number, since it is larger than the sum of its proper divisors (1).

26670949673 is an equidigital number, since it uses as much as digits as its factorization.

26670949673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20575296, while the sum is 59.

The spelling of 26670949673 in words is "twenty-six billion, six hundred seventy million, nine hundred forty-nine thousand, six hundred seventy-three".