12019952436 has 24 divisors (see below), whose sum is σ = 28172331264. Its totient is φ = 3988682880.

The previous prime is 12019952407. The next prime is 12019952489. The reversal of 12019952436 is 63425991021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243205 + ... + 2248556.

It is an arithmetic number, because the mean of its divisors is an integer number (1173847136).

Almost surely, 2^12019952436 is an apocalyptic number.

It is an amenable number.

12019952436 is an abundant number, since it is smaller than the sum of its proper divisors (16152378828).

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

12019952436 is a wasteful number, since it uses less digits than its factorization.

12019952436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491991 (or 4491989 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 12019952436 in words is "twelve billion, nineteen million, nine hundred fifty-two thousand, four hundred thirty-six".