26640334000 has 80 divisors (see below), whose sum is σ = 73618698816. Its totient is φ = 9133824000.

The previous prime is 26640333997. The next prime is 26640334051. The reversal of 26640334000 is 43304662.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 26640334000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937441 + ... + 965440.

Almost surely, 2^26640334000 is an apocalyptic number.

26640334000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26640334000 is an abundant number, since it is smaller than the sum of its proper divisors (46978364816).

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

26640334000 is a wasteful number, since it uses less digits than its factorization.

26640334000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902911 (or 1902895 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 26640334000 its reverse (43304662), we get a palindrome (26683638662).

The spelling of 26640334000 in words is "twenty-six billion, six hundred forty million, three hundred thirty-four thousand".