66874378842414 has 48 divisors (see below), whose sum is σ = 170225691605424. Its totient is φ = 18706119955200.

The previous prime is 66874378842389. The next prime is 66874378842433. The reversal of 66874378842414 is 41424887347866.

It is a happy number.

66874378842414 is a `hidden beast` number, since 6 + 6 + 8 + 7 + 4 + 378 + 8 + 4 + 241 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12990358507 + ... + 12990363654.

It is an arithmetic number, because the mean of its divisors is an integer number (3546368575113).

Almost surely, 2^{66874378842414} is an apocalyptic number.

66874378842414 is an abundant number, since it is smaller than the sum of its proper divisors (103351312763010).

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

66874378842414 is a wasteful number, since it uses less digits than its factorization.

66874378842414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25980722193 (or 25980722190 counting only the distinct ones).

The product of its digits is 1387266048, while the sum is 72.

The spelling of 66874378842414 in words is "sixty-six trillion, eight hundred seventy-four billion, three hundred seventy-eight million, eight hundred forty-two thousand, four hundred fourteen".