66601265500652 has 24 divisors (see below), whose sum is σ = 119607020919792. Its totient is φ = 32430716249600.

The previous prime is 66601265500643. The next prime is 66601265500681. The reversal of 66601265500652 is 25600556210666.

It is a self number, because there is not a number n which added to its sum of digits gives 66601265500652.

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, 360569549 + ... + 360754212.

It is an arithmetic number, because the mean of its divisors is an integer number (4983625871658).

Almost surely, 2^{66601265500652} is an apocalyptic number.

It is an amenable number.

66601265500652 is a deficient number, since it is larger than the sum of its proper divisors (53005755419140).

66601265500652 is a wasteful number, since it uses less digits than its factorization.

66601265500652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721324369 (or 721324367 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 66601265500652 in words is "sixty-six trillion, six hundred one billion, two hundred sixty-five million, five hundred thousand, six hundred fifty-two".