3871644834772 has 96 divisors (see below), whose sum is σ = 8052438610944. Its totient is φ = 1605621657600.

The previous prime is 3871644834769. The next prime is 3871644834833. The reversal of 3871644834772 is 2774384461783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42843997 + ... + 42934267.

It is an arithmetic number, because the mean of its divisors is an integer number (83879568864).

Almost surely, 2^{3871644834772} is an apocalyptic number.

It is an amenable number.

3871644834772 is an abundant number, since it is smaller than the sum of its proper divisors (4180793776172).

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

3871644834772 is a wasteful number, since it uses less digits than its factorization.

3871644834772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91169 (or 91167 counting only the distinct ones).

The product of its digits is 151732224, while the sum is 64.

The spelling of 3871644834772 in words is "three trillion, eight hundred seventy-one billion, six hundred forty-four million, eight hundred thirty-four thousand, seven hundred seventy-two".