66268075776 has 72 divisors (see below), whose sum is σ = 201565413504. Its totient is φ = 18933734400.

The previous prime is 66268075729. The next prime is 66268075781. The reversal of 66268075776 is 67757086266.

66268075776 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 7 ways as a sum of consecutive naturals, for example, 6157950 + ... + 6168701.

It is an arithmetic number, because the mean of its divisors is an integer number (2799519632).

Almost surely, 2^66268075776 is an apocalyptic number.

It is an amenable number.

66268075776 is an abundant number, since it is smaller than the sum of its proper divisors (135297337728).

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

66268075776 is a wasteful number, since it uses less digits than its factorization.

66268075776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12326677 (or 12326663 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 60.

The spelling of 66268075776 in words is "sixty-six billion, two hundred sixty-eight million, seventy-five thousand, seven hundred seventy-six".