26552375640 has 512 divisors, whose sum is σ = 105255936000. Its totient is φ = 5825433600.

The previous prime is 26552375639. The next prime is 26552375671. The reversal of 26552375640 is 4657325562.

26552375640 is a `hidden beast` number, since 2 + 6 + 5 + 52 + 37 + 564 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 61606225 + ... + 61606655.

It is an arithmetic number, because the mean of its divisors is an integer number (205578000).

Almost surely, 2^26552375640 is an apocalyptic number.

26552375640 is a gapful number since it is divisible by the number (20) 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 26552375640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52627968000).

26552375640 is an abundant number, since it is smaller than the sum of its proper divisors (78703560360).

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

26552375640 is a wasteful number, since it uses less digits than its factorization.

26552375640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 26552375640 in words is "twenty-six billion, five hundred fifty-two million, three hundred seventy-five thousand, six hundred forty".