12720934919 has 16 divisors (see below), whose sum is σ = 15870877440. Its totient is φ = 9905535360.

The previous prime is 12720934903. The next prime is 12720934939. The reversal of 12720934919 is 91943902721.

It is not a de Polignac number, because 12720934919 - 2⁴ = 12720934903 is a prime.

It is a super-2 number, since 2×12720934919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720934939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55727 + ... + 168959.

It is an arithmetic number, because the mean of its divisors is an integer number (991929840).

Almost surely, 2^12720934919 is an apocalyptic number.

12720934919 is a deficient number, since it is larger than the sum of its proper divisors (3149942521).

12720934919 is a wasteful number, since it uses less digits than its factorization.

12720934919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114710.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 12720934919 in words is "twelve billion, seven hundred twenty million, nine hundred thirty-four thousand, nine hundred nineteen".