3666530453545 has 16 divisors (see below), whose sum is σ = 4576982760000. Its totient is φ = 2816257006528.

The previous prime is 3666530453543. The next prime is 3666530453647. The reversal of 3666530453545 is 5453540356663.

It is a cyclic number.

It is not a de Polignac number, because 3666530453545 - 2¹ = 3666530453543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3666530453543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70606495 + ... + 70658404.

It is an arithmetic number, because the mean of its divisors is an integer number (286061422500).

Almost surely, 2^{3666530453545} is an apocalyptic number.

It is an amenable number.

3666530453545 is a deficient number, since it is larger than the sum of its proper divisors (910452306455).

3666530453545 is a wasteful number, since it uses less digits than its factorization.

3666530453545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141265112.

The product of its (nonzero) digits is 58320000, while the sum is 55.

The spelling of 3666530453545 in words is "three trillion, six hundred sixty-six billion, five hundred thirty million, four hundred fifty-three thousand, five hundred forty-five".