26520536640 has 112 divisors (see below), whose sum is σ = 90679877568. Its totient is φ = 6528129024.

The previous prime is 26520536633. The next prime is 26520536641. The reversal of 26520536640 is 4663502562.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (26520536641) 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, 1050042 + ... + 1075001.

It is an arithmetic number, because the mean of its divisors is an integer number (809641764).

Almost surely, 2^26520536640 is an apocalyptic number.

26520536640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26520536640 is an abundant number, since it is smaller than the sum of its proper divisors (64159340928).

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

26520536640 is a wasteful number, since it uses less digits than its factorization.

26520536640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125076 (or 2125066 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 26520536640 in words is "twenty-six billion, five hundred twenty million, five hundred thirty-six thousand, six hundred forty".