26504137540 has 48 divisors (see below), whose sum is σ = 57374376192. Its totient is φ = 10279076096.

The previous prime is 26504137531. The next prime is 26504137559. The reversal of 26504137540 is 4573140562.

It is a self number, because there is not a number n which added to its sum of digits gives 26504137540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31177 + ... + 232336.

It is an arithmetic number, because the mean of its divisors is an integer number (1195299504).

Almost surely, 2^26504137540 is an apocalyptic number.

26504137540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26504137540 is an abundant number, since it is smaller than the sum of its proper divisors (30870238652).

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

26504137540 is a wasteful number, since it uses less digits than its factorization.

26504137540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263676 (or 263674 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 26504137540 in words is "twenty-six billion, five hundred four million, one hundred thirty-seven thousand, five hundred forty".