20049937685 has 8 divisors (see below), whose sum is σ = 24061264800. Its totient is φ = 16039057104.

The previous prime is 20049937681. The next prime is 20049937697. The reversal of 20049937685 is 58673994002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20049937685 - 2² = 20049937681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20049937681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3287 + ... + 200276.

It is an arithmetic number, because the mean of its divisors is an integer number (3007658100).

Almost surely, 2^20049937685 is an apocalyptic number.

It is an amenable number.

20049937685 is a deficient number, since it is larger than the sum of its proper divisors (4011327115).

20049937685 is a wasteful number, since it uses less digits than its factorization.

20049937685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223267.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 20049937685 in words is "twenty billion, forty-nine million, nine hundred thirty-seven thousand, six hundred eighty-five".