3912901264165 has 4 divisors (see below), whose sum is σ = 4695481517004. Its totient is φ = 3130321011328.

The previous prime is 3912901264157. The next prime is 3912901264201. The reversal of 3912901264165 is 5614621092193.

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 1932458636641 + 1980442627524 = 1390129^2 + 1407282^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912901264165 - 2³ = 3912901264157 is a prime.

It is a super-2 number, since 2×3912901264165² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391290126412 + ... + 391290126421.

It is an arithmetic number, because the mean of its divisors is an integer number (1173870379251).

Almost surely, 2^{3912901264165} is an apocalyptic number.

It is an amenable number.

3912901264165 is a deficient number, since it is larger than the sum of its proper divisors (782580252839).

3912901264165 is an equidigital number, since it uses as much as digits as its factorization.

3912901264165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782580252838.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 3912901264165 in words is "three trillion, nine hundred twelve billion, nine hundred one million, two hundred sixty-four thousand, one hundred sixty-five".