3666740559400 has 48 divisors (see below), whose sum is σ = 8755581866940. Its totient is φ = 1427055782400.

The previous prime is 3666740559359. The next prime is 3666740559463. The reversal of 3666740559400 is 49550476663.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 804641292324 + 2862099267076 = 897018^2 + 1691774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247745341 + ... + 247760140.

Almost surely, 2^{3666740559400} is an apocalyptic number.

It is an amenable number.

3666740559400 is an abundant number, since it is smaller than the sum of its proper divisors (5088841307540).

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

3666740559400 is a wasteful number, since it uses less digits than its factorization.

3666740559400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495505534 (or 495505525 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 3666740559400 in words is "three trillion, six hundred sixty-six billion, seven hundred forty million, five hundred fifty-nine thousand, four hundred".