20683485388 has 12 divisors (see below), whose sum is σ = 36197418712. Its totient is φ = 10341365760.

The previous prime is 20683485359. The next prime is 20683485397. The reversal of 20683485388 is 88358438602.

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, 55756 + ... + 210892.

Almost surely, 2^20683485388 is an apocalyptic number.

It is an amenable number.

20683485388 is a deficient number, since it is larger than the sum of its proper divisors (15513933324).

20683485388 is a wasteful number, since it uses less digits than its factorization.

20683485388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188472 (or 188470 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 20683485388 in words is "twenty billion, six hundred eighty-three million, four hundred eighty-five thousand, three hundred eighty-eight".