20675263504 has 80 divisors (see below), whose sum is σ = 47328526336. Its totient is φ = 8562153600.

The previous prime is 20675263489. The next prime is 20675263537. The reversal of 20675263504 is 40536257602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2520049 + ... + 2528239.

Almost surely, 2^20675263504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20675263504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23664263168).

20675263504 is an abundant number, since it is smaller than the sum of its proper divisors (26653262832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20675263504 is a wasteful number, since it uses less digits than its factorization.

20675263504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8964 (or 8958 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 20675263504 in words is "twenty billion, six hundred seventy-five million, two hundred sixty-three thousand, five hundred four".