12662161576 has 8 divisors (see below), whose sum is σ = 23741552970. Its totient is φ = 6331080784.

The previous prime is 12662161573. The next prime is 12662161579. The reversal of 12662161576 is 67516126621.

It is an interprime number because it is at equal distance from previous prime (12662161573) and next prime (12662161579).

It can be written as a sum of positive squares in only one way, i.e., 6679139076 + 5983022500 = 81726^2 + 77350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12662161573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 791385091 + ... + 791385106.

Almost surely, 2^12662161576 is an apocalyptic number.

It is an amenable number.

12662161576 is a deficient number, since it is larger than the sum of its proper divisors (11079391394).

12662161576 is a wasteful number, since it uses less digits than its factorization.

12662161576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582770203 (or 1582770199 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The spelling of 12662161576 in words is "twelve billion, six hundred sixty-two million, one hundred sixty-one thousand, five hundred seventy-six".