27400856142 has 16 divisors (see below), whose sum is σ = 59783686272. Its totient is φ = 8303289720.

The previous prime is 27400856111. The next prime is 27400856177. The reversal of 27400856142 is 24165800472.

It is a self number, because there is not a number n which added to its sum of digits gives 27400856142.

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, 207582178 + ... + 207582309.

It is an arithmetic number, because the mean of its divisors is an integer number (3736480392).

Almost surely, 2^27400856142 is an apocalyptic number.

27400856142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27400856142 is an abundant number, since it is smaller than the sum of its proper divisors (32382830130).

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

27400856142 is a wasteful number, since it uses less digits than its factorization.

27400856142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415164503.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 27400856142 in words is "twenty-seven billion, four hundred million, eight hundred fifty-six thousand, one hundred forty-two".