66743867334 has 16 divisors (see below), whose sum is σ = 133502902272. Its totient is φ = 22245427848.

The previous prime is 66743867249. The next prime is 66743867347. The reversal of 66743867334 is 43376834766.

It is a happy number.

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, 574374 + ... + 680729.

It is an arithmetic number, because the mean of its divisors is an integer number (8343931392).

Almost surely, 2^66743867334 is an apocalyptic number.

66743867334 is an abundant number, since it is smaller than the sum of its proper divisors (66759034938).

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

66743867334 is a wasteful number, since it uses less digits than its factorization.

66743867334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263971.

The product of its digits is 36578304, while the sum is 57.

The spelling of 66743867334 in words is "sixty-six billion, seven hundred forty-three million, eight hundred sixty-seven thousand, three hundred thirty-four".