26345640204 has 96 divisors (see below), whose sum is σ = 73595271680. Its totient is φ = 8102203200.

The previous prime is 26345640193. The next prime is 26345640257. The reversal of 26345640204 is 40204654362.

26345640204 is a `hidden beast` number, since 2 + 6 + 3 + 4 + 5 + 640 + 2 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3830889 + ... + 3837759.

Almost surely, 2^26345640204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26345640204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36797635840).

26345640204 is an abundant number, since it is smaller than the sum of its proper divisors (47249631476).

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

26345640204 is a wasteful number, since it uses less digits than its factorization.

26345640204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9628 (or 9620 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 26345640204 in words is "twenty-six billion, three hundred forty-five million, six hundred forty thousand, two hundred four".