2731138286420 has 12 divisors (see below), whose sum is σ = 5735390401524. Its totient is φ = 1092455314560.

The previous prime is 2731138286419. The next prime is 2731138286509. The reversal of 2731138286420 is 246828311372.

It can be written as a sum of positive squares in 2 ways, for example, as 475170334276 + 2255967952144 = 689326^2 + 1501988^2 .

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, 68278457141 + ... + 68278457180.

It is an arithmetic number, because the mean of its divisors is an integer number (477949200127).

Almost surely, 2^{2731138286420} is an apocalyptic number.

2731138286420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2731138286420 is an abundant number, since it is smaller than the sum of its proper divisors (3004252115104).

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

2731138286420 is a wasteful number, since it uses less digits than its factorization.

2731138286420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136556914330 (or 136556914328 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 2731138286420 in words is "two trillion, seven hundred thirty-one billion, one hundred thirty-eight million, two hundred eighty-six thousand, four hundred twenty".