3543504621640 has 32 divisors (see below), whose sum is σ = 7973544915000. Its totient is φ = 1417284601344.

The previous prime is 3543504621637. The next prime is 3543504621677. The reversal of 3543504621640 is 461264053453.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3499690596516 + 43814025124 = 1870746^2 + 209318^2 .

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, 3173565 + ... + 4142284.

Almost surely, 2^{3543504621640} is an apocalyptic number.

It is an amenable number.

3543504621640 is an abundant number, since it is smaller than the sum of its proper divisors (4430040293360).

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

3543504621640 is a wasteful number, since it uses less digits than its factorization.

3543504621640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7327969 (or 7327965 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 3543504621640 in words is "three trillion, five hundred forty-three billion, five hundred four million, six hundred twenty-one thousand, six hundred forty".