26130881784 has 32 divisors (see below), whose sum is σ = 74659662720. Its totient is φ = 7465966176.

The previous prime is 26130881779. The next prime is 26130881809. The reversal of 26130881784 is 48718803162.

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 7 ways as a sum of consecutive naturals, for example, 77770314 + ... + 77770649.

It is an arithmetic number, because the mean of its divisors is an integer number (2333114460).

Almost surely, 2^26130881784 is an apocalyptic number.

26130881784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26130881784 is an abundant number, since it is smaller than the sum of its proper divisors (48528780936).

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

26130881784 is a wasteful number, since it uses less digits than its factorization.

26130881784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155540979 (or 155540975 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 26130881784 in words is "twenty-six billion, one hundred thirty million, eight hundred eighty-one thousand, seven hundred eighty-four".