20378189212 has 6 divisors (see below), whose sum is σ = 35661831128. Its totient is φ = 10189094604.

The previous prime is 20378189189. The next prime is 20378189243. The reversal of 20378189212 is 21298187302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2547273648 + ... + 2547273655.

Almost surely, 2^20378189212 is an apocalyptic number.

It is an amenable number.

20378189212 is a deficient number, since it is larger than the sum of its proper divisors (15283641916).

20378189212 is a wasteful number, since it uses less digits than its factorization.

20378189212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094547307 (or 5094547305 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 20378189212 in words is "twenty billion, three hundred seventy-eight million, one hundred eighty-nine thousand, two hundred twelve".