20112565466 has 16 divisors (see below), whose sum is σ = 34532320704. Its totient is φ = 8606261664.

The previous prime is 20112565453. The next prime is 20112565469. The reversal of 20112565466 is 66456521102.

It is not an unprimeable number, because it can be changed into a prime (20112565469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108115 + ... + 1126118.

It is an arithmetic number, because the mean of its divisors is an integer number (2158270044).

Almost surely, 2^20112565466 is an apocalyptic number.

20112565466 is a deficient number, since it is larger than the sum of its proper divisors (14419755238).

20112565466 is a wasteful number, since it uses less digits than its factorization.

20112565466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234885.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 20112565466 in words is "twenty billion, one hundred twelve million, five hundred sixty-five thousand, four hundred sixty-six".