26451686900 has 36 divisors (see below), whose sum is σ = 57785429100. Its totient is φ = 10509657600.

The previous prime is 26451686881. The next prime is 26451686923. The reversal of 26451686900 is 968615462.

It can be written as a sum of positive squares in 6 ways, for example, as 4030218256 + 22421468644 = 63484^2 + 149738^2 .

It is a super-2 number, since 2×26451686900² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 872741 + ... + 902540.

Almost surely, 2^26451686900 is an apocalyptic number.

26451686900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26451686900 is an abundant number, since it is smaller than the sum of its proper divisors (31333742200).

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

26451686900 is a wasteful number, since it uses less digits than its factorization.

26451686900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775444 (or 1775437 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 26451686900 in words is "twenty-six billion, four hundred fifty-one million, six hundred eighty-six thousand, nine hundred".