26385558780 has 96 divisors (see below), whose sum is σ = 88877698560. Its totient is φ = 5713562880.

The previous prime is 26385558779. The next prime is 26385558791. The reversal of 26385558780 is 8785558362.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 26385558780.

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, 1645251 + ... + 1661210.

It is an arithmetic number, because the mean of its divisors is an integer number (925809360).

Almost surely, 2^26385558780 is an apocalyptic number.

26385558780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26385558780 is an abundant number, since it is smaller than the sum of its proper divisors (62492139780).

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

26385558780 is a wasteful number, since it uses less digits than its factorization.

26385558780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306499 (or 3306497 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 26385558780 in words is "twenty-six billion, three hundred eighty-five million, five hundred fifty-eight thousand, seven hundred eighty".