26478885340 has 12 divisors (see below), whose sum is σ = 55605659256. Its totient is φ = 10591554128.

The previous prime is 26478885289. The next prime is 26478885373. The reversal of 26478885340 is 4358887462.

It is a super-2 number, since 2×26478885340² (a number of 22 digits) contains 22 as substring.

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, 661972114 + ... + 661972153.

It is an arithmetic number, because the mean of its divisors is an integer number (4633804938).

Almost surely, 2^26478885340 is an apocalyptic number.

26478885340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26478885340 is an abundant number, since it is smaller than the sum of its proper divisors (29126773916).

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

26478885340 is a wasteful number, since it uses less digits than its factorization.

26478885340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323944276 (or 1323944274 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 26478885340 in words is "twenty-six billion, four hundred seventy-eight million, eight hundred eighty-five thousand, three hundred forty".