3712218544849 has 4 divisors (see below), whose sum is σ = 3712291104564. Its totient is φ = 3712145985136.

The previous prime is 3712218544843. The next prime is 3712218544883. The reversal of 3712218544849 is 9484458122173.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3496395118225 + 215823426624 = 1869865^2 + 464568^2 .

It is a cyclic number.

It is not a de Polignac number, because 3712218544849 - 2²³ = 3712210156241 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3712218544793 and 3712218544802.

It is not an unprimeable number, because it can be changed into a prime (3712218544843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36203062 + ... + 36305455.

It is an arithmetic number, because the mean of its divisors is an integer number (928072776141).

Almost surely, 2^{3712218544849} is an apocalyptic number.

It is an amenable number.

3712218544849 is a deficient number, since it is larger than the sum of its proper divisors (72559715).

3712218544849 is an equidigital number, since it uses as much as digits as its factorization.

3712218544849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72559714.

The product of its digits is 15482880, while the sum is 58.

The spelling of 3712218544849 in words is "three trillion, seven hundred twelve billion, two hundred eighteen million, five hundred forty-four thousand, eight hundred forty-nine".