66948460694 has 16 divisors (see below), whose sum is σ = 101015706528. Its totient is φ = 33276839232.

The previous prime is 66948460687. The next prime is 66948460723. The reversal of 66948460694 is 49606484966.

66948460694 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, 412394 + ... + 551330.

It is an arithmetic number, because the mean of its divisors is an integer number (6313481658).

Almost surely, 2^66948460694 is an apocalyptic number.

66948460694 is a deficient number, since it is larger than the sum of its proper divisors (34067245834).

66948460694 is a wasteful number, since it uses less digits than its factorization.

66948460694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140359.

The product of its (nonzero) digits is 53747712, while the sum is 62.

The spelling of 66948460694 in words is "sixty-six billion, nine hundred forty-eight million, four hundred sixty thousand, six hundred ninety-four".