20350216837 has 4 divisors (see below), whose sum is σ = 20350636416. Its totient is φ = 20349797260.

The previous prime is 20350216829. The next prime is 20350216853. The reversal of 20350216837 is 73861205302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20350216837 - 2³ = 20350216829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20350216796 and 20350216805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350216807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125839 + ... + 237772.

It is an arithmetic number, because the mean of its divisors is an integer number (5087659104).

Almost surely, 2^20350216837 is an apocalyptic number.

It is an amenable number.

20350216837 is a deficient number, since it is larger than the sum of its proper divisors (419579).

20350216837 is an equidigital number, since it uses as much as digits as its factorization.

20350216837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419578.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 20350216837 in words is "twenty billion, three hundred fifty million, two hundred sixteen thousand, eight hundred thirty-seven".