27878040258680 has 32 divisors (see below), whose sum is σ = 62726492847600. Its totient is φ = 11151055700736.

The previous prime is 27878040258661. The next prime is 27878040258701. The reversal of 27878040258680 is 8685204087872.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177222 + ... + 7777941.

Almost surely, 2^{27878040258680} is an apocalyptic number.

27878040258680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27878040258680 is an abundant number, since it is smaller than the sum of its proper divisors (34848452588920).

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

27878040258680 is a wasteful number, since it uses less digits than its factorization.

27878040258680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10025183 (or 10025179 counting only the distinct ones).

The product of its (nonzero) digits is 96337920, while the sum is 65.

The spelling of 27878040258680 in words is "twenty-seven trillion, eight hundred seventy-eight billion, forty million, two hundred fifty-eight thousand, six hundred eighty".