66614662325540 has 48 divisors (see below), whose sum is σ = 161341934476800. Its totient is φ = 22629777812352.

The previous prime is 66614662325513. The next prime is 66614662325551. The reversal of 66614662325540 is 4552326641666.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182640780 + ... + 2182671299.

It is an arithmetic number, because the mean of its divisors is an integer number (3361290301600).

Almost surely, 2^{66614662325540} is an apocalyptic number.

It is an amenable number.

66614662325540 is an abundant number, since it is smaller than the sum of its proper divisors (94727272151260).

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

66614662325540 is a wasteful number, since it uses less digits than its factorization.

66614662325540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365312204 (or 4365312202 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 66614662325540 in words is "sixty-six trillion, six hundred fourteen billion, six hundred sixty-two million, three hundred twenty-five thousand, five hundred forty".