12740340561918 has 16 divisors (see below), whose sum is σ = 26359325300880. Its totient is φ = 4100339491136.

The previous prime is 12740340561877. The next prime is 12740340561967. The reversal of 12740340561918 is 81916504304721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36610173855 + ... + 36610174202.

It is an arithmetic number, because the mean of its divisors is an integer number (1647457831305).

It is a 1-persistent number, because it is pandigital, but 2⋅12740340561918 = 25480681123836 is not.

Almost surely, 2^{12740340561918} is an apocalyptic number.

12740340561918 is an abundant number, since it is smaller than the sum of its proper divisors (13618984738962).

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

12740340561918 is a wasteful number, since it uses less digits than its factorization.

12740340561918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73220348091.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 12740340561918 in words is "twelve trillion, seven hundred forty billion, three hundred forty million, five hundred sixty-one thousand, nine hundred eighteen".