26993969240 has 32 divisors (see below), whose sum is σ = 69413064480. Its totient is φ = 9255075072.

The previous prime is 26993969183. The next prime is 26993969257. The reversal of 26993969240 is 4296939962.

It is a self number, because there is not a number n which added to its sum of digits gives 26993969240.

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, 48203237 + ... + 48203796.

It is an arithmetic number, because the mean of its divisors is an integer number (2169158265).

Almost surely, 2^26993969240 is an apocalyptic number.

26993969240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26993969240 is an abundant number, since it is smaller than the sum of its proper divisors (42419095240).

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

26993969240 is a wasteful number, since it uses less digits than its factorization.

26993969240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96407051 (or 96407047 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 59.

The spelling of 26993969240 in words is "twenty-six billion, nine hundred ninety-three million, nine hundred sixty-nine thousand, two hundred forty".