26666939423700 has 288 divisors, whose sum is σ = 88855160822400. Its totient is φ = 6852832035840.

The previous prime is 26666939423669. The next prime is 26666939423771. The reversal of 26666939423700 is 732493966662.

It is a happy number.

It is a super-2 number, since 2×26666939423700² (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 95 ways as a sum of consecutive naturals, for example, 40625304 + ... + 41276496.

Almost surely, 2^{26666939423700} is an apocalyptic number.

26666939423700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26666939423700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44427580411200).

26666939423700 is an abundant number, since it is smaller than the sum of its proper divisors (62188221398700).

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

26666939423700 is a wasteful number, since it uses less digits than its factorization.

26666939423700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651768 (or 651755 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 63.

The spelling of 26666939423700 in words is "twenty-six trillion, six hundred sixty-six billion, nine hundred thirty-nine million, four hundred twenty-three thousand, seven hundred".