20734706186 has 16 divisors (see below), whose sum is σ = 31280014944. Its totient is φ = 10308154704.

The previous prime is 20734706119. The next prime is 20734706219. The reversal of 20734706186 is 68160743702.

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, 321401 + ... + 380483.

It is an arithmetic number, because the mean of its divisors is an integer number (1955000934).

Almost surely, 2^20734706186 is an apocalyptic number.

20734706186 is a deficient number, since it is larger than the sum of its proper divisors (10545308758).

20734706186 is a wasteful number, since it uses less digits than its factorization.

20734706186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60085.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 20734706186 in words is "twenty billion, seven hundred thirty-four million, seven hundred six thousand, one hundred eighty-six".