26667620364440 has 64 divisors (see below), whose sum is σ = 65458997523360. Its totient is φ = 9697003729920.

The previous prime is 26667620364389. The next prime is 26667620364457. The reversal of 26667620364440 is 4446302676662.

It is a super-2 number, since 2×26667620364440² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 12904082 + ... + 14827358.

Almost surely, 2^{26667620364440} is an apocalyptic number.

26667620364440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26667620364440 is an abundant number, since it is smaller than the sum of its proper divisors (38791377158920).

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

26667620364440 is a wasteful number, since it uses less digits than its factorization.

26667620364440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954812 (or 1954808 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 56.

The spelling of 26667620364440 in words is "twenty-six trillion, six hundred sixty-seven billion, six hundred twenty million, three hundred sixty-four thousand, four hundred forty".