3871867585778 has 8 divisors (see below), whose sum is σ = 5808104889840. Its totient is φ = 1935832622500.

The previous prime is 3871867585757. The next prime is 3871867585799. The reversal of 3871867585778 is 8775857681783.

It is an interprime number because it is at equal distance from previous prime (3871867585757) and next prime (3871867585799).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50537348 + ... + 50613903.

It is an arithmetic number, because the mean of its divisors is an integer number (726013111230).

Almost surely, 2^{3871867585778} is an apocalyptic number.

3871867585778 is a deficient number, since it is larger than the sum of its proper divisors (1936237304062).

3871867585778 is a wasteful number, since it uses less digits than its factorization.

3871867585778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101170392.

The product of its digits is 4425523200, while the sum is 80.

The spelling of 3871867585778 in words is "three trillion, eight hundred seventy-one billion, eight hundred sixty-seven million, five hundred eighty-five thousand, seven hundred seventy-eight".