26643596460 has 96 divisors (see below), whose sum is σ = 85066656192. Its totient is φ = 6172631040.

The previous prime is 26643596449. The next prime is 26643596491. The reversal of 26643596460 is 6469534662.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991401 + ... + 1017920.

It is an arithmetic number, because the mean of its divisors is an integer number (886111002).

Almost surely, 2^26643596460 is an apocalyptic number.

26643596460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26643596460 is an abundant number, since it is smaller than the sum of its proper divisors (58423059732).

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

26643596460 is a wasteful number, since it uses less digits than its factorization.

26643596460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009363 (or 2009361 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 26643596460 in words is "twenty-six billion, six hundred forty-three million, five hundred ninety-six thousand, four hundred sixty".