1566216171496 has 8 divisors (see below), whose sum is σ = 2936655321570. Its totient is φ = 783108085744.

The previous prime is 1566216171451. The next prime is 1566216171511. The reversal of 1566216171496 is 6941716126651.

It can be written as a sum of positive squares in only one way, i.e., 1136292040900 + 429924130596 = 1065970^2 + 655686^2 .

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

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97888510711 + ... + 97888510726.

Almost surely, 2^{1566216171496} is an apocalyptic number.

It is an amenable number.

1566216171496 is a deficient number, since it is larger than the sum of its proper divisors (1370439150074).

1566216171496 is a wasteful number, since it uses less digits than its factorization.

1566216171496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195777021443 (or 195777021439 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The spelling of 1566216171496 in words is "one trillion, five hundred sixty-six billion, two hundred sixteen million, one hundred seventy-one thousand, four hundred ninety-six".