12040040019 has 16 divisors (see below), whose sum is σ = 18842586368. Its totient is φ = 6694075872.

The previous prime is 12040040003. The next prime is 12040040039. The reversal of 12040040019 is 91004004021.

It is not a de Polignac number, because 12040040019 - 2⁴ = 12040040003 is a prime.

It is a super-2 number, since 2×12040040019² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12040039977 and 12040040004.

It is not an unprimeable number, because it can be changed into a prime (12040040039) 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, 7746997 + ... + 7748550.

It is an arithmetic number, because the mean of its divisors is an integer number (1177661648).

Almost surely, 2^12040040019 is an apocalyptic number.

12040040019 is a deficient number, since it is larger than the sum of its proper divisors (6802546349).

12040040019 is a wasteful number, since it uses less digits than its factorization.

12040040019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15495594.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 12040040019 in words is "twelve billion, forty million, forty thousand, nineteen".