20475730166 has 16 divisors (see below), whose sum is σ = 31408689600. Its totient is φ = 10008106248.

The previous prime is 20475730159. The next prime is 20475730193. The reversal of 20475730166 is 66103757402.

It is a congruent 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, 463580 + ... + 505823.

It is an arithmetic number, because the mean of its divisors is an integer number (1963043100).

Almost surely, 2^20475730166 is an apocalyptic number.

20475730166 is a deficient number, since it is larger than the sum of its proper divisors (10932959434).

20475730166 is a wasteful number, since it uses less digits than its factorization.

20475730166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969643.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 20475730166 in words is "twenty billion, four hundred seventy-five million, seven hundred thirty thousand, one hundred sixty-six".