3861821736466 has 8 divisors (see below), whose sum is σ = 6133481581500. Its totient is φ = 1817327875968.

The previous prime is 3861821736431. The next prime is 3861821736467. The reversal of 3861821736466 is 6646371281683.

It can be written as a sum of positive squares in 2 ways, for example, as 3853270850625 + 8550885841 = 1962975^2 + 92471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3861821736467) 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, 56791496091 + ... + 56791496158.

Almost surely, 2^{3861821736466} is an apocalyptic number.

3861821736466 is a deficient number, since it is larger than the sum of its proper divisors (2271659845034).

3861821736466 is a wasteful number, since it uses less digits than its factorization.

3861821736466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113582992268.

The product of its digits is 41803776, while the sum is 61.

The spelling of 3861821736466 in words is "three trillion, eight hundred sixty-one billion, eight hundred twenty-one million, seven hundred thirty-six thousand, four hundred sixty-six".