3805200961640 has 32 divisors (see below), whose sum is σ = 9220294639080. Its totient is φ = 1404997277952.

The previous prime is 3805200961607. The next prime is 3805200961691. The reversal of 3805200961640 is 461690025083.

It can be written as a sum of positive squares in 4 ways, for example, as 1925894470756 + 1879306490884 = 1387766^2 + 1370878^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3805200961591 and 3805200961600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3658846559 + ... + 3658847598.

Almost surely, 2^{3805200961640} is an apocalyptic number.

It is an amenable number.

3805200961640 is an abundant number, since it is smaller than the sum of its proper divisors (5415093677440).

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

3805200961640 is a wasteful number, since it uses less digits than its factorization.

3805200961640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317694181 (or 7317694177 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 3805200961640 in words is "three trillion, eight hundred five billion, two hundred million, nine hundred sixty-one thousand, six hundred forty".