66704067067340 has 48 divisors (see below), whose sum is σ = 148319831957472. Its totient is φ = 25111886232576.

The previous prime is 66704067067327. The next prime is 66704067067549. The reversal of 66704067067340 is 4376076040766.

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, 38237627 + ... + 39944013.

It is an arithmetic number, because the mean of its divisors is an integer number (3089996499114).

Almost surely, 2^{66704067067340} is an apocalyptic number.

It is an amenable number.

66704067067340 is an abundant number, since it is smaller than the sum of its proper divisors (81615764890132).

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

66704067067340 is a wasteful number, since it uses less digits than its factorization.

66704067067340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821386 (or 1821384 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 56.

The spelling of 66704067067340 in words is "sixty-six trillion, seven hundred four billion, sixty-seven million, sixty-seven thousand, three hundred forty".