26540724220 has 48 divisors (see below), whose sum is σ = 56948411520. Its totient is φ = 10385478144.

The previous prime is 26540724191. The next prime is 26540724229. The reversal of 26540724220 is 2242704562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540724229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454586 + ... + 2465374.

It is an arithmetic number, because the mean of its divisors is an integer number (1186425240).

Almost surely, 2^26540724220 is an apocalyptic number.

26540724220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26540724220 is an abundant number, since it is smaller than the sum of its proper divisors (30407687300).

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

26540724220 is a wasteful number, since it uses less digits than its factorization.

26540724220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13462 (or 13460 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The spelling of 26540724220 in words is "twenty-six billion, five hundred forty million, seven hundred twenty-four thousand, two hundred twenty".