26563040064 has 84 divisors (see below), whose sum is σ = 83059828800. Its totient is φ = 8049404160.

The previous prime is 26563040057. The next prime is 26563040081. The reversal of 26563040064 is 46004036562.

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

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, 2089864 + ... + 2102535.

Almost surely, 2^26563040064 is an apocalyptic number.

26563040064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26563040064 is an abundant number, since it is smaller than the sum of its proper divisors (56496788736).

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

26563040064 is a wasteful number, since it uses less digits than its factorization.

26563040064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192428 (or 4192415 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 26563040064 in words is "twenty-six billion, five hundred sixty-three million, forty thousand, sixty-four".