20340236677 has 8 divisors (see below), whose sum is σ = 21017464832. Its totient is φ = 19664326800.

The previous prime is 20340236669. The next prime is 20340236681. The reversal of 20340236677 is 77663204302.

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 20340236677 - 2³ = 20340236669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340236377) 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, 298149 + ... + 359962.

It is an arithmetic number, because the mean of its divisors is an integer number (2627183104).

Almost surely, 2^20340236677 is an apocalyptic number.

It is an amenable number.

20340236677 is a deficient number, since it is larger than the sum of its proper divisors (677228155).

20340236677 is an equidigital number, since it uses as much as digits as its factorization.

20340236677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659139.

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 20340236677 in words is "twenty billion, three hundred forty million, two hundred thirty-six thousand, six hundred seventy-seven".