26669362957 has 2 divisors, whose sum is σ = 26669362958. Its totient is φ = 26669362956.

The previous prime is 26669362943. The next prime is 26669362963. The reversal of 26669362957 is 75926396662.

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., 26540971396 + 128391561 = 162914^2 + 11331^2 .

It is a cyclic number.

It is not a de Polignac number, because 26669362957 - 2¹⁵ = 26669330189 is a prime.

It is a super-2 number, since 2×26669362957² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26669362895 and 26669362904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26669362927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13334681478 + 13334681479.

It is an arithmetic number, because the mean of its divisors is an integer number (13334681479).

Almost surely, 2^26669362957 is an apocalyptic number.

It is an amenable number.

26669362957 is a deficient number, since it is larger than the sum of its proper divisors (1).

26669362957 is an equidigital number, since it uses as much as digits as its factorization.

26669362957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44089920, while the sum is 61.

The spelling of 26669362957 in words is "twenty-six billion, six hundred sixty-nine million, three hundred sixty-two thousand, nine hundred fifty-seven".