26390139260 has 12 divisors (see below), whose sum is σ = 55419292488. Its totient is φ = 10556055696.

The previous prime is 26390139233. The next prime is 26390139299. The reversal of 26390139260 is 6293109362.

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, 659753462 + ... + 659753501.

It is an arithmetic number, because the mean of its divisors is an integer number (4618274374).

Almost surely, 2^26390139260 is an apocalyptic number.

26390139260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26390139260 is an abundant number, since it is smaller than the sum of its proper divisors (29029153228).

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

26390139260 is a wasteful number, since it uses less digits than its factorization.

26390139260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319506972 (or 1319506970 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 26390139260 in words is "twenty-six billion, three hundred ninety million, one hundred thirty-nine thousand, two hundred sixty".