3866652348961 has 4 divisors (see below), whose sum is σ = 3876294873924. Its totient is φ = 3857009824000.

The previous prime is 3866652348959. The next prime is 3866652349003. The reversal of 3866652348961 is 1698432566683.

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 3842795693025 + 23856655936 = 1960305^2 + 154456^2 .

It is a cyclic number.

It is not a de Polignac number, because 3866652348961 - 2¹ = 3866652348959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866652342961) 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, 4821261880 + ... + 4821262681.

It is an arithmetic number, because the mean of its divisors is an integer number (969073718481).

Almost surely, 2^{3866652348961} is an apocalyptic number.

It is an amenable number.

3866652348961 is a deficient number, since it is larger than the sum of its proper divisors (9642524963).

3866652348961 is an equidigital number, since it uses as much as digits as its factorization.

3866652348961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9642524962.

The product of its digits is 268738560, while the sum is 67.

The spelling of 3866652348961 in words is "three trillion, eight hundred sixty-six billion, six hundred fifty-two million, three hundred forty-eight thousand, nine hundred sixty-one".