26143541780 has 12 divisors (see below), whose sum is σ = 54901437780. Its totient is φ = 10457416704.

The previous prime is 26143541771. The next prime is 26143541791. The reversal of 26143541780 is 8714534162.

It can be written as a sum of positive squares in 2 ways, for example, as 8137122436 + 18006419344 = 90206^2 + 134188^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653588525 + ... + 653588564.

It is an arithmetic number, because the mean of its divisors is an integer number (4575119815).

Almost surely, 2^26143541780 is an apocalyptic number.

26143541780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26143541780 is an abundant number, since it is smaller than the sum of its proper divisors (28757896000).

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

26143541780 is a wasteful number, since it uses less digits than its factorization.

26143541780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307177098 (or 1307177096 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 26143541780 in words is "twenty-six billion, one hundred forty-three million, five hundred forty-one thousand, seven hundred eighty".