3861066767265 has 24 divisors (see below), whose sum is σ = 7086193127208. Its totient is φ = 1938104102400.

The previous prime is 3861066767221. The next prime is 3861066767273. The reversal of 3861066767265 is 5627676601683.

3861066767265 is a `hidden beast` number, since 3 + 8 + 610 + 6 + 6 + 7 + 6 + 7 + 2 + 6 + 5 = 666.

3861066767265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1641821944896 + 2219244822369 = 1281336^2 + 1489713^2 .

It is not a de Polignac number, because 3861066767265 - 2⁸ = 3861066767009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2523572286 + ... + 2523573815.

It is an arithmetic number, because the mean of its divisors is an integer number (295258046967).

Almost surely, 2^{3861066767265} is an apocalyptic number.

It is an amenable number.

3861066767265 is a deficient number, since it is larger than the sum of its proper divisors (3225126359943).

3861066767265 is a wasteful number, since it uses less digits than its factorization.

3861066767265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047146129 (or 5047146126 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 63.

The spelling of 3861066767265 in words is "three trillion, eight hundred sixty-one billion, sixty-six million, seven hundred sixty-seven thousand, two hundred sixty-five".