66734667400716 has 144 divisors (see below), whose sum is σ = 201181519977984. Its totient is φ = 18237107547648.

The previous prime is 66734667400679. The next prime is 66734667400747. The reversal of 66734667400716 is 61700476643766.

66734667400716 is a `hidden beast` number, since 6 + 67 + 3 + 46 + 67 + 400 + 71 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116346820 + ... + 116918996.

It is an arithmetic number, because the mean of its divisors is an integer number (1397093888736).

Almost surely, 2^{66734667400716} is an apocalyptic number.

It is an amenable number.

66734667400716 is an abundant number, since it is smaller than the sum of its proper divisors (134446852577268).

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

66734667400716 is a wasteful number, since it uses less digits than its factorization.

66734667400716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592340 (or 592335 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 63.

The spelling of 66734667400716 in words is "sixty-six trillion, seven hundred thirty-four billion, six hundred sixty-seven million, four hundred thousand, seven hundred sixteen".