12400454526 has 32 divisors (see below), whose sum is σ = 25337594880. Its totient is φ = 4044099936.

The previous prime is 12400454497. The next prime is 12400454581. The reversal of 12400454526 is 62545400421.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1030935 + ... + 1042893.

It is an arithmetic number, because the mean of its divisors is an integer number (791799840).

Almost surely, 2^12400454526 is an apocalyptic number.

12400454526 is an abundant number, since it is smaller than the sum of its proper divisors (12937140354).

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

12400454526 is a wasteful number, since it uses less digits than its factorization.

12400454526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15688.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 12400454526 its reverse (62545400421), we get a palindrome (74945854947).

The spelling of 12400454526 in words is "twelve billion, four hundred million, four hundred fifty-four thousand, five hundred twenty-six".