20675902186 has 8 divisors (see below), whose sum is σ = 31599020484. Its totient is φ = 10142895360.

The previous prime is 20675902171. The next prime is 20675902223. The reversal of 20675902186 is 68120957602.

It can be written as a sum of positive squares in 2 ways, for example, as 19752897025 + 923005161 = 140545^2 + 30381^2 .

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

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, 97527735 + ... + 97527946.

Almost surely, 2^20675902186 is an apocalyptic number.

20675902186 is a deficient number, since it is larger than the sum of its proper divisors (10923118298).

20675902186 is a wasteful number, since it uses less digits than its factorization.

20675902186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195055736.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 20675902186 in words is "twenty billion, six hundred seventy-five million, nine hundred two thousand, one hundred eighty-six".