3997687469532 has 12 divisors (see below), whose sum is σ = 9327937428936. Its totient is φ = 1332562489840.

The previous prime is 3997687469527. The next prime is 3997687469569. The reversal of 3997687469532 is 2359647867993.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 166570311219 + ... + 166570311242.

It is an arithmetic number, because the mean of its divisors is an integer number (777328119078).

Almost surely, 2^{3997687469532} is an apocalyptic number.

It is an amenable number.

3997687469532 is an abundant number, since it is smaller than the sum of its proper divisors (5330249959404).

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

3997687469532 is a wasteful number, since it uses less digits than its factorization.

3997687469532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333140622468 (or 333140622466 counting only the distinct ones).

The product of its digits is 3703553280, while the sum is 78.

The spelling of 3997687469532 in words is "three trillion, nine hundred ninety-seven billion, six hundred eighty-seven million, four hundred sixty-nine thousand, five hundred thirty-two".