26545178790 has 256 divisors, whose sum is σ = 80193576960. Its totient is φ = 6202759680.

The previous prime is 26545178783. The next prime is 26545178791. The reversal of 26545178790 is 9787154562.

26545178790 is a `hidden beast` number, since 2 + 6 + 54 + 517 + 8 + 79 + 0 = 666.

It is a super-3 number, since 3×26545178790³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26545178791) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 5764629 + ... + 5769231.

It is an arithmetic number, because the mean of its divisors is an integer number (313256160).

Almost surely, 2^26545178790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26545178790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40096788480).

26545178790 is an abundant number, since it is smaller than the sum of its proper divisors (53648398170).

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

26545178790 is a wasteful number, since it uses less digits than its factorization.

26545178790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716 (or 4710 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 26545178790 in words is "twenty-six billion, five hundred forty-five million, one hundred seventy-eight thousand, seven hundred ninety".