26513909604 has 192 divisors, whose sum is σ = 86330944000. Its totient is φ = 6992552448.

The previous prime is 26513909603. The next prime is 26513909627. The reversal of 26513909604 is 40690931562.

26513909604 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 39 + 0 + 9 + 604 = 666.

It is a super-3 number, since 3×26513909604³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26513909604.

It is not an unprimeable number, because it can be changed into a prime (26513909603) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 454044 + ... + 509100.

Almost surely, 2^26513909604 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 26513909604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43165472000).

26513909604 is an abundant number, since it is smaller than the sum of its proper divisors (59817034396).

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

26513909604 is a wasteful number, since it uses less digits than its factorization.

26513909604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55104 (or 55082 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 26513909604 in words is "twenty-six billion, five hundred thirteen million, nine hundred nine thousand, six hundred four".