26722462989690 has 160 divisors (see below), whose sum is σ = 81453625989120. Its totient is φ = 6231635047296.

The previous prime is 26722462989679. The next prime is 26722462989731. The reversal of 26722462989690 is 9698926422762.

It is a happy number.

26722462989690 is a `hidden beast` number, since 2 + 6 + 7 + 2 + 246 + 298 + 9 + 6 + 90 = 666.

It is a super-2 number, since 2×26722462989690² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 66582714 + ... + 66982853.

It is an arithmetic number, because the mean of its divisors is an integer number (509085162432).

Almost surely, 2^{26722462989690} is an apocalyptic number.

26722462989690 is an abundant number, since it is smaller than the sum of its proper divisors (54731162999430).

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

26722462989690 is a wasteful number, since it uses less digits than its factorization.

26722462989690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133565618 (or 133565609 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 72.

The spelling of 26722462989690 in words is "twenty-six trillion, seven hundred twenty-two billion, four hundred sixty-two million, nine hundred eighty-nine thousand, six hundred ninety".