20839423716 has 60 divisors (see below), whose sum is σ = 55950790588. Its totient is φ = 6758728128.

The previous prime is 20839423711. The next prime is 20839423729. The reversal of 20839423716 is 61732493802.

20839423716 is a `hidden beast` number, since 20 + 8 + 394 + 237 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14666178816 + 6173244900 = 121104^2 + 78570^2 .

It is not an unprimeable number, because it can be changed into a prime (20839423711) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 857191 + ... + 881166.

Almost surely, 2^20839423716 is an apocalyptic number.

It is an amenable number.

20839423716 is an abundant number, since it is smaller than the sum of its proper divisors (35111366872).

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

20839423716 is a wasteful number, since it uses less digits than its factorization.

20839423716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738410 (or 1738399 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 20839423716 in words is "twenty billion, eight hundred thirty-nine million, four hundred twenty-three thousand, seven hundred sixteen".