20340703637 has 8 divisors (see below), whose sum is σ = 21303409920. Its totient is φ = 19384524720.

The previous prime is 20340703613. The next prime is 20340703709. The reversal of 20340703637 is 73630704302.

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 20340703637 - 2⁶ = 20340703573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20340703597 and 20340703606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340703237) 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, 1625462 + ... + 1637927.

It is an arithmetic number, because the mean of its divisors is an integer number (2662926240).

Almost surely, 2^20340703637 is an apocalyptic number.

It is an amenable number.

20340703637 is a deficient number, since it is larger than the sum of its proper divisors (962706283).

20340703637 is a wasteful number, since it uses less digits than its factorization.

20340703637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263683.

The product of its (nonzero) digits is 63504, while the sum is 35.

The spelling of 20340703637 in words is "twenty billion, three hundred forty million, seven hundred three thousand, six hundred thirty-seven".