20734706185 has 8 divisors (see below), whose sum is σ = 25046427456. Its totient is φ = 16477911600.

The previous prime is 20734706119. The next prime is 20734706219. The reversal of 20734706185 is 58160743702.

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

It is not a de Polignac number, because 20734706185 - 2²¹ = 20732609033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13730839 + ... + 13732348.

It is an arithmetic number, because the mean of its divisors is an integer number (3130803432).

Almost surely, 2^20734706185 is an apocalyptic number.

It is an amenable number.

20734706185 is a deficient number, since it is larger than the sum of its proper divisors (4311721271).

20734706185 is a wasteful number, since it uses less digits than its factorization.

20734706185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27463343.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 20734706185 in words is "twenty billion, seven hundred thirty-four million, seven hundred six thousand, one hundred eighty-five".