66740366667404 has 24 divisors (see below), whose sum is σ = 123670401121008. Its totient is φ = 31406106905600.

The previous prime is 66740366667301. The next prime is 66740366667409. The reversal of 66740366667404 is 40476666304766.

It is a super-3 number, since 3×66740366667404³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66740366667409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15655022 + ... + 19456629.

It is an arithmetic number, because the mean of its divisors is an integer number (5152933380042).

Almost surely, 2^{66740366667404} is an apocalyptic number.

It is an amenable number.

66740366667404 is a deficient number, since it is larger than the sum of its proper divisors (56930034453604).

66740366667404 is a wasteful number, since it uses less digits than its factorization.

66740366667404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35139625 (or 35139623 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 65.

The spelling of 66740366667404 in words is "sixty-six trillion, seven hundred forty billion, three hundred sixty-six million, six hundred sixty-seven thousand, four hundred four".