3870723521867 has 4 divisors (see below), whose sum is σ = 3904977712440. Its totient is φ = 3836469331296.

The previous prime is 3870723521627. The next prime is 3870723521881. The reversal of 3870723521867 is 7681253270783.

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

It is a cyclic number.

It is not a de Polignac number, because 3870723521867 - 2¹⁸ = 3870723259723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3870723551867) 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, 17127095117 + ... + 17127095342.

It is an arithmetic number, because the mean of its divisors is an integer number (976244428110).

Almost surely, 2^{3870723521867} is an apocalyptic number.

3870723521867 is a deficient number, since it is larger than the sum of its proper divisors (34254190573).

3870723521867 is a wasteful number, since it uses less digits than its factorization.

3870723521867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34254190572.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 3870723521867 in words is "three trillion, eight hundred seventy billion, seven hundred twenty-three million, five hundred twenty-one thousand, eight hundred sixty-seven".