20433672508 has 6 divisors (see below), whose sum is σ = 35758926896. Its totient is φ = 10216836252.

The previous prime is 20433672499. The next prime is 20433672521. The reversal of 20433672508 is 80527633402.

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, 2554209060 + ... + 2554209067.

Almost surely, 2^20433672508 is an apocalyptic number.

It is an amenable number.

20433672508 is a deficient number, since it is larger than the sum of its proper divisors (15325254388).

20433672508 is a wasteful number, since it uses less digits than its factorization.

20433672508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108418131 (or 5108418129 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20433672508 in words is "twenty billion, four hundred thirty-three million, six hundred seventy-two thousand, five hundred eight".