3867694609780 has 24 divisors (see below), whose sum is σ = 8122625747208. Its totient is φ = 1546988878848.

The previous prime is 3867694609771. The next prime is 3867694609789. The reversal of 3867694609780 is 879064967683.

It is an interprime number because it is at equal distance from previous prime (3867694609771) and next prime (3867694609789).

It can be written as a sum of positive squares in 4 ways, for example, as 597253843684 + 3270440766096 = 772822^2 + 1808436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867694609789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5203269 + ... + 5899948.

It is an arithmetic number, because the mean of its divisors is an integer number (338442739467).

Almost surely, 2^{3867694609780} is an apocalyptic number.

It is an amenable number.

3867694609780 is an abundant number, since it is smaller than the sum of its proper divisors (4254931137428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3867694609780 is a wasteful number, since it uses less digits than its factorization.

3867694609780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11120643 (or 11120641 counting only the distinct ones).

The product of its (nonzero) digits is 658409472, while the sum is 73.

The spelling of 3867694609780 in words is "three trillion, eight hundred sixty-seven billion, six hundred ninety-four million, six hundred nine thousand, seven hundred eighty".