26400600440 has 32 divisors (see below), whose sum is σ = 60068790000. Its totient is φ = 10441584384.

The previous prime is 26400600407. The next prime is 26400600497. The reversal of 26400600440 is 4400600462.

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, 3704390 + ... + 3711509.

Almost surely, 2^26400600440 is an apocalyptic number.

26400600440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26400600440 is an abundant number, since it is smaller than the sum of its proper divisors (33668189560).

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

26400600440 is a wasteful number, since it uses less digits than its factorization.

26400600440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7415999 (or 7415995 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 26400600440 in words is "twenty-six billion, four hundred million, six hundred thousand, four hundred forty".