26012726666965 has 16 divisors (see below), whose sum is σ = 32573295727488. Its totient is φ = 19904878737216.

The previous prime is 26012726666963. The next prime is 26012726666989. The reversal of 26012726666965 is 56966662721062.

It is a cyclic number.

It is not a de Polignac number, because 26012726666965 - 2¹ = 26012726666963 is a prime.

It is a super-2 number, since 2×26012726666965² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26012726666897 and 26012726666906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26012726666963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610182 + ... + 7390408.

It is an arithmetic number, because the mean of its divisors is an integer number (2035830982968).

Almost surely, 2^{26012726666965} is an apocalyptic number.

It is an amenable number.

26012726666965 is a deficient number, since it is larger than the sum of its proper divisors (6560569060523).

26012726666965 is a wasteful number, since it uses less digits than its factorization.

26012726666965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819388.

The product of its (nonzero) digits is 117573120, while the sum is 64.

The spelling of 26012726666965 in words is "twenty-six trillion, twelve billion, seven hundred twenty-six million, six hundred sixty-six thousand, nine hundred sixty-five".