26085647064 has 64 divisors (see below), whose sum is σ = 68110295040. Its totient is φ = 8309734400.

The previous prime is 26085647017. The next prime is 26085647069. The reversal of 26085647064 is 46074658062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26085647069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614824 + ... + 655880.

It is an arithmetic number, because the mean of its divisors is an integer number (1064223360).

Almost surely, 2^26085647064 is an apocalyptic number.

26085647064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26085647064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34055147520).

26085647064 is an abundant number, since it is smaller than the sum of its proper divisors (42024647976).

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

26085647064 is a wasteful number, since it uses less digits than its factorization.

26085647064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42240 (or 42236 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 26085647064 in words is "twenty-six billion, eighty-five million, six hundred forty-seven thousand, sixty-four".