12019999959 has 24 divisors (see below), whose sum is σ = 18951484032. Its totient is φ = 7280664720.

The previous prime is 12019999933. The next prime is 12020000017. The reversal of 12019999959 is 95999991021.

It is not a de Polignac number, because 12019999959 - 2⁸ = 12019999703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12019999896 and 12019999905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12019997959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142942 + ... + 210884.

It is an arithmetic number, because the mean of its divisors is an integer number (789645168).

Almost surely, 2^12019999959 is an apocalyptic number.

12019999959 is a deficient number, since it is larger than the sum of its proper divisors (6931484073).

12019999959 is a wasteful number, since it uses less digits than its factorization.

12019999959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69747 (or 69744 counting only the distinct ones).

The product of its (nonzero) digits is 5314410, while the sum is 63.

The spelling of 12019999959 in words is "twelve billion, nineteen million, nine hundred ninety-nine thousand, nine hundred fifty-nine".