26643248877 has 96 divisors (see below), whose sum is σ = 43762954752. Its totient is φ = 14360201856.

The previous prime is 26643248873. The next prime is 26643248897. The reversal of 26643248877 is 77884234662.

It is not a de Polignac number, because 26643248877 - 2² = 26643248873 is a prime.

It is a super-2 number, since 2×26643248877² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26643248873) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22445278 + ... + 22446464.

It is an arithmetic number, because the mean of its divisors is an integer number (455864112).

Almost surely, 2^26643248877 is an apocalyptic number.

It is an amenable number.

26643248877 is a deficient number, since it is larger than the sum of its proper divisors (17119705875).

26643248877 is a wasteful number, since it uses less digits than its factorization.

26643248877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1360 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 57.

The spelling of 26643248877 in words is "twenty-six billion, six hundred forty-three million, two hundred forty-eight thousand, eight hundred seventy-seven".