26621059968 has 256 divisors, whose sum is σ = 83776680000. Its totient is φ = 8292925440.

The previous prime is 26621059967. The next prime is 26621060047. The reversal of 26621059968 is 86995012662.

It is a happy number.

26621059968 is a `hidden beast` number, since 2 + 6 + 621 + 0 + 5 + 9 + 9 + 6 + 8 = 666.

It is a super-2 number, since 2×26621059968² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26621059967) 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, 8752528 + ... + 8755568.

Almost surely, 2^26621059968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26621059968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41888340000).

26621059968 is an abundant number, since it is smaller than the sum of its proper divisors (57155620032).

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

26621059968 is a wasteful number, since it uses less digits than its factorization.

26621059968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230 (or 3212 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 26621059968 in words is "twenty-six billion, six hundred twenty-one million, fifty-nine thousand, nine hundred sixty-eight".