3871998626688 has 128 divisors (see below), whose sum is σ = 11670918336000. Its totient is φ = 1263205172736.

The previous prime is 3871998626687. The next prime is 3871998626689. The reversal of 3871998626688 is 8866268991783.

3871998626688 is a `hidden beast` number, since 387 + 19 + 98 + 6 + 2 + 66 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (3871998626687) and next prime (3871998626689).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871998626687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11756398 + ... + 12081261.

It is an arithmetic number, because the mean of its divisors is an integer number (91179049500).

Almost surely, 2^{3871998626688} is an apocalyptic number.

It is an amenable number.

3871998626688 is an abundant number, since it is smaller than the sum of its proper divisors (7798919709312).

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

3871998626688 is a wasteful number, since it uses less digits than its factorization.

3871998626688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23837729 (or 23837711 counting only the distinct ones).

The product of its digits is 3009871872, while the sum is 81.

The spelling of 3871998626688 in words is "three trillion, eight hundred seventy-one billion, nine hundred ninety-eight million, six hundred twenty-six thousand, six hundred eighty-eight".