26563300812 has 36 divisors (see below), whose sum is σ = 68872208440. Its totient is φ = 8853869016.

The previous prime is 26563300807. The next prime is 26563300817. The reversal of 26563300812 is 21800336562.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

26563300812 is a `hidden beast` number, since 2 + 6 + 5 + 633 + 0 + 0 + 8 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (26563300807) and next prime (26563300817).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (26563300817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1685923 + ... + 1701605.

Almost surely, 2^26563300812 is an apocalyptic number.

It is an amenable number.

26563300812 is an abundant number, since it is smaller than the sum of its proper divisors (42308907628).

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

26563300812 is an frugal number, since it uses more digits than its factorization.

26563300812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31379 (or 15688 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 26563300812 in words is "twenty-six billion, five hundred sixty-three million, three hundred thousand, eight hundred twelve".