26966397677 has 2 divisors, whose sum is σ = 26966397678. Its totient is φ = 26966397676.

The previous prime is 26966397671. The next prime is 26966397727. The reversal of 26966397677 is 77679366962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24806565001 + 2159832676 = 157501^2 + 46474^2 .

It is a cyclic number.

It is not a de Polignac number, because 26966397677 - 2²⁶ = 26899288813 is a prime.

It is a super-2 number, since 2×26966397677² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26966397671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13483198838 + 13483198839.

It is an arithmetic number, because the mean of its divisors is an integer number (13483198839).

Almost surely, 2^26966397677 is an apocalyptic number.

It is an amenable number.

26966397677 is a deficient number, since it is larger than the sum of its proper divisors (1).

26966397677 is an equidigital number, since it uses as much as digits as its factorization.

26966397677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216040608, while the sum is 68.

The spelling of 26966397677 in words is "twenty-six billion, nine hundred sixty-six million, three hundred ninety-seven thousand, six hundred seventy-seven".