26368892561 has 16 divisors (see below), whose sum is σ = 29648541888. Its totient is φ = 23243500800.

The previous prime is 26368892551. The next prime is 26368892567. The reversal of 26368892561 is 16529886362.

It is a cyclic number.

It is not a de Polignac number, because 26368892561 - 2⁶ = 26368892497 is a prime.

It is a super-2 number, since 2×26368892561² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26368892497 and 26368892506.

It is not an unprimeable number, because it can be changed into a prime (26368892567) 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, 105836 + ... + 252861.

It is an arithmetic number, because the mean of its divisors is an integer number (1853033868).

Almost surely, 2^26368892561 is an apocalyptic number.

It is an amenable number.

26368892561 is a deficient number, since it is larger than the sum of its proper divisors (3279649327).

26368892561 is a wasteful number, since it uses less digits than its factorization.

26368892561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358912.

The product of its digits is 7464960, while the sum is 56.

The spelling of 26368892561 in words is "twenty-six billion, three hundred sixty-eight million, eight hundred ninety-two thousand, five hundred sixty-one".