26912786640 has 40 divisors (see below), whose sum is σ = 83429639328. Its totient is φ = 7176743040.

The previous prime is 26912786587. The next prime is 26912786651. The reversal of 26912786640 is 4668721962.

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

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, 56068066 + ... + 56068545.

Almost surely, 2^26912786640 is an apocalyptic number.

26912786640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26912786640 is an abundant number, since it is smaller than the sum of its proper divisors (56516852688).

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

26912786640 is a wasteful number, since it uses less digits than its factorization.

26912786640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112136627 (or 112136621 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 26912786640 in words is "twenty-six billion, nine hundred twelve million, seven hundred eighty-six thousand, six hundred forty".