20189566948 has 12 divisors (see below), whose sum is σ = 35428016512. Its totient is φ = 10067276520.

The previous prime is 20189566933. The next prime is 20189566973. The reversal of 20189566948 is 84966598102.

It is a super-2 number, since 2×20189566948² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20189566892 and 20189566901.

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, 6875088 + ... + 6878023.

Almost surely, 2^20189566948 is an apocalyptic number.

It is an amenable number.

20189566948 is a deficient number, since it is larger than the sum of its proper divisors (15238449564).

20189566948 is a wasteful number, since it uses less digits than its factorization.

20189566948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13753482 (or 13753480 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 20189566948 in words is "twenty billion, one hundred eighty-nine million, five hundred sixty-six thousand, nine hundred forty-eight".