26694917440 has 28 divisors (see below), whose sum is σ = 63567272916. Its totient is φ = 10677966848.

The previous prime is 26694917371. The next prime is 26694917453. The reversal of 26694917440 is 4471949662.

It can be written as a sum of positive squares in 2 ways, for example, as 5219773504 + 21475143936 = 72248^2 + 146544^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41710489 + ... + 41711128.

It is an arithmetic number, because the mean of its divisors is an integer number (2270259747).

Almost surely, 2^26694917440 is an apocalyptic number.

26694917440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26694917440 is an abundant number, since it is smaller than the sum of its proper divisors (36872355476).

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

26694917440 is an equidigital number, since it uses as much as digits as its factorization.

26694917440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83421634 (or 83421624 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 26694917440 in words is "twenty-six billion, six hundred ninety-four million, nine hundred seventeen thousand, four hundred forty".