66007435616 has 24 divisors (see below), whose sum is σ = 129997741104. Its totient is φ = 32992136320.

The previous prime is 66007435609. The next prime is 66007435643. The reversal of 66007435616 is 61653470066.

66007435616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268940 + ... + 452043.

It is an arithmetic number, because the mean of its divisors is an integer number (5416572546).

Almost surely, 2^66007435616 is an apocalyptic number.

It is an amenable number.

66007435616 is a deficient number, since it is larger than the sum of its proper divisors (63990305488).

66007435616 is a wasteful number, since it uses less digits than its factorization.

66007435616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723854 (or 723846 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 66007435616 in words is "sixty-six billion, seven million, four hundred thirty-five thousand, six hundred sixteen".