26642644624464 has 40 divisors (see below), whose sum is σ = 75083816670432. Its totient is φ = 8073528673920.

The previous prime is 26642644624459. The next prime is 26642644624489. The reversal of 26642644624464 is 46442644624662.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 26642644624398 and 26642644624407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25229776579 + ... + 25229777634.

Almost surely, 2^{26642644624464} is an apocalyptic number.

26642644624464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26642644624464 is an abundant number, since it is smaller than the sum of its proper divisors (48441172045968).

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

26642644624464 is a wasteful number, since it uses less digits than its factorization.

26642644624464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50459554235 (or 50459554229 counting only the distinct ones).

The product of its digits is 254803968, while the sum is 60.

The spelling of 26642644624464 in words is "twenty-six trillion, six hundred forty-two billion, six hundred forty-four million, six hundred twenty-four thousand, four hundred sixty-four".