3945701209660 has 96 divisors (see below), whose sum is σ = 9554745876480. Its totient is φ = 1340663159808.

The previous prime is 3945701209633. The next prime is 3945701209721. The reversal of 3945701209660 is 669021075493.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3945701209598 and 3945701209607.

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, 187282447 + ... + 187303513.

It is an arithmetic number, because the mean of its divisors is an integer number (99528602880).

Almost surely, 2^{3945701209660} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3945701209660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4777372938240).

3945701209660 is an abundant number, since it is smaller than the sum of its proper divisors (5609044666820).

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

3945701209660 is a wasteful number, since it uses less digits than its factorization.

3945701209660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33035 (or 33033 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 3945701209660 in words is "three trillion, nine hundred forty-five billion, seven hundred one million, two hundred nine thousand, six hundred sixty".