20387339676 has 36 divisors (see below), whose sum is σ = 56219634744. Its totient is φ = 6177981600.

The previous prime is 20387339669. The next prime is 20387339741. The reversal of 20387339676 is 67693378302.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25741195 + ... + 25741986.

Almost surely, 2^20387339676 is an apocalyptic number.

It is an amenable number.

20387339676 is an abundant number, since it is smaller than the sum of its proper divisors (35832295068).

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

20387339676 is a wasteful number, since it uses less digits than its factorization.

20387339676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51483202 (or 51483197 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

It can be divided in two parts, 20387 and 339676, that added together give a palindrome (360063).

The spelling of 20387339676 in words is "twenty billion, three hundred eighty-seven million, three hundred thirty-nine thousand, six hundred seventy-six".