26300631864 has 128 divisors (see below), whose sum is σ = 76570583040. Its totient is φ = 7454349312.

The previous prime is 26300631857. The next prime is 26300631901. The reversal of 26300631864 is 46813600362.

It is a super-2 number, since 2×26300631864² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196537 + ... + 302039.

It is an arithmetic number, because the mean of its divisors is an integer number (598207680).

Almost surely, 2^26300631864 is an apocalyptic number.

26300631864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26300631864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38285291520).

26300631864 is an abundant number, since it is smaller than the sum of its proper divisors (50269951176).

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

26300631864 is a wasteful number, since it uses less digits than its factorization.

26300631864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105589 (or 105585 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 26300631864 in words is "twenty-six billion, three hundred million, six hundred thirty-one thousand, eight hundred sixty-four".