66740707334016 has 128 divisors (see below), whose sum is σ = 197244336000000. Its totient is φ = 22216797531648.

The previous prime is 66740707334009. The next prime is 66740707334029. The reversal of 66740707334016 is 61043370704766.

66740707334016 is a `hidden beast` number, since 6 + 67 + 40 + 70 + 73 + 3 + 401 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10512016 + ... + 15619983.

It is an arithmetic number, because the mean of its divisors is an integer number (1540971375000).

Almost surely, 2^{66740707334016} is an apocalyptic number.

It is an amenable number.

66740707334016 is an abundant number, since it is smaller than the sum of its proper divisors (130503628665984).

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

66740707334016 is a wasteful number, since it uses less digits than its factorization.

66740707334016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26132761 (or 26132743 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 54.

The spelling of 66740707334016 in words is "sixty-six trillion, seven hundred forty billion, seven hundred seven million, three hundred thirty-four thousand, sixteen".