19994546372 has 12 divisors (see below), whose sum is σ = 35063508480. Its totient is φ = 9976401096.

The previous prime is 19994546353. The next prime is 19994546381. The reversal of 19994546372 is 27364549991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5215868 + ... + 5219699.

It is an arithmetic number, because the mean of its divisors is an integer number (2921959040).

Almost surely, 2^19994546372 is an apocalyptic number.

It is an amenable number.

19994546372 is a deficient number, since it is larger than the sum of its proper divisors (15068962108).

19994546372 is a wasteful number, since it uses less digits than its factorization.

19994546372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436050 (or 10436048 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 59.

The spelling of 19994546372 in words is "nineteen billion, nine hundred ninety-four million, five hundred forty-six thousand, three hundred seventy-two".