26138447067880 has 64 divisors (see below), whose sum is σ = 68216330989440. Its totient is φ = 8827995762432.

The previous prime is 26138447067781. The next prime is 26138447067989. The reversal of 26138447067880 is 8876074483162.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696634947 + ... + 696672466.

It is an arithmetic number, because the mean of its divisors is an integer number (1065880171710).

Almost surely, 2^{26138447067880} is an apocalyptic number.

26138447067880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26138447067880 is an abundant number, since it is smaller than the sum of its proper divisors (42077883921560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26138447067880 is a wasteful number, since it uses less digits than its factorization.

26138447067880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393307498 (or 1393307494 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 64.

The spelling of 26138447067880 in words is "twenty-six trillion, one hundred thirty-eight billion, four hundred forty-seven million, sixty-seven thousand, eight hundred eighty".