26842443640 has 32 divisors (see below), whose sum is σ = 60401674080. Its totient is φ = 10735879552.

The previous prime is 26842443583. The next prime is 26842443673. The reversal of 26842443640 is 4634424862.

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, 444117 + ... + 500923.

It is an arithmetic number, because the mean of its divisors is an integer number (1887552315).

Almost surely, 2^26842443640 is an apocalyptic number.

26842443640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26842443640 is an abundant number, since it is smaller than the sum of its proper divisors (33559230440).

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

26842443640 is a wasteful number, since it uses less digits than its factorization.

26842443640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68631 (or 68627 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 43.

The spelling of 26842443640 in words is "twenty-six billion, eight hundred forty-two million, four hundred forty-three thousand, six hundred forty".