26475637640 has 64 divisors (see below), whose sum is σ = 62192793600. Its totient is φ = 10124497152.

The previous prime is 26475637627. The next prime is 26475637691. The reversal of 26475637640 is 4673657462.

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 15 ways as a sum of consecutive naturals, for example, 2053454 + ... + 2066306.

It is an arithmetic number, because the mean of its divisors is an integer number (971762400).

Almost surely, 2^26475637640 is an apocalyptic number.

26475637640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26475637640 is an abundant number, since it is smaller than the sum of its proper divisors (35717155960).

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

26475637640 is a wasteful number, since it uses less digits than its factorization.

26475637640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15126 (or 15122 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 50.

The spelling of 26475637640 in words is "twenty-six billion, four hundred seventy-five million, six hundred thirty-seven thousand, six hundred forty".