20146783792 has 20 divisors (see below), whose sum is σ = 39319320456. Its totient is φ = 9999862400.

The previous prime is 20146783771. The next prime is 20146783801. The reversal of 20146783792 is 29738764102.

It is a happy number.

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, 4593334 + ... + 4597717.

Almost surely, 2^20146783792 is an apocalyptic number.

It is an amenable number.

20146783792 is a deficient number, since it is larger than the sum of its proper divisors (19172536664).

20146783792 is a wasteful number, since it uses less digits than its factorization.

20146783792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9191196 (or 9191190 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 20146783792 in words is "twenty billion, one hundred forty-six million, seven hundred eighty-three thousand, seven hundred ninety-two".