26967664240 has 40 divisors (see below), whose sum is σ = 68399805168. Its totient is φ = 9806423040.

The previous prime is 26967664223. The next prime is 26967664261. The reversal of 26967664240 is 4246676962.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×26967664240² (a number of 22 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 7 ways as a sum of consecutive naturals, for example, 15321657 + ... + 15323416.

Almost surely, 2^26967664240 is an apocalyptic number.

26967664240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26967664240 is an abundant number, since it is smaller than the sum of its proper divisors (41432140928).

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

26967664240 is a wasteful number, since it uses less digits than its factorization.

26967664240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30645097 (or 30645091 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 26967664240 in words is "twenty-six billion, nine hundred sixty-seven million, six hundred sixty-four thousand, two hundred forty".