20785704190 has 8 divisors (see below), whose sum is σ = 37414267560. Its totient is φ = 8314281672.

The previous prime is 20785704169. The next prime is 20785704229. The reversal of 20785704190 is 9140758702.

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

It is a super-2 number, since 2×20785704190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039285200 + ... + 1039285219.

It is an arithmetic number, because the mean of its divisors is an integer number (4676783445).

Almost surely, 2^20785704190 is an apocalyptic number.

20785704190 is a deficient number, since it is larger than the sum of its proper divisors (16628563370).

20785704190 is a wasteful number, since it uses less digits than its factorization.

20785704190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078570426.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 20785704190 in words is "twenty billion, seven hundred eighty-five million, seven hundred four thousand, one hundred ninety".