26004006400 has 60 divisors (see below), whose sum is σ = 64426989132. Its totient is φ = 10401597440.

The previous prime is 26004006397. The next prime is 26004006409. The reversal of 26004006400 is 460040062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26004006409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1002982 + ... + 1028581.

Almost surely, 2^26004006400 is an apocalyptic number.

26004006400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26004006400 is an abundant number, since it is smaller than the sum of its proper divisors (38422982732).

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

26004006400 is an equidigital number, since it uses as much as digits as its factorization.

26004006400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031591 (or 2031570 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 26004006400 its reverse (460040062), we get a palindrome (26464046462).

The spelling of 26004006400 in words is "twenty-six billion, four million, six thousand, four hundred".