26669047881 has 32 divisors (see below), whose sum is σ = 43114332160. Its totient is φ = 14323671936.

The previous prime is 26669047859. The next prime is 26669047913. The reversal of 26669047881 is 18874096662.

It is not a de Polignac number, because 26669047881 - 2²⁶ = 26601939017 is a prime.

It is a super-2 number, since 2×26669047881² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26669047081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212476 + ... + 313821.

It is an arithmetic number, because the mean of its divisors is an integer number (1347322880).

Almost surely, 2^26669047881 is an apocalyptic number.

26669047881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26669047881 is a deficient number, since it is larger than the sum of its proper divisors (16445284279).

26669047881 is a wasteful number, since it uses less digits than its factorization.

26669047881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526453.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 26669047881 in words is "twenty-six billion, six hundred sixty-nine million, forty-seven thousand, eight hundred eighty-one".