66974425244574 has 16 divisors (see below), whose sum is σ = 134723121303312. Its totient is φ = 22195763279168.

The previous prime is 66974425244549. The next prime is 66974425244603. The reversal of 66974425244574 is 47544252447966.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66974425244499 and 66974425244508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32261282799 + ... + 32261284874.

It is an arithmetic number, because the mean of its divisors is an integer number (8420195081457).

Almost surely, 2^{66974425244574} is an apocalyptic number.

66974425244574 is an abundant number, since it is smaller than the sum of its proper divisors (67748696058738).

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

66974425244574 is a wasteful number, since it uses less digits than its factorization.

66974425244574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64522567851.

The product of its digits is 1625702400, while the sum is 69.

The spelling of 66974425244574 in words is "sixty-six trillion, nine hundred seventy-four billion, four hundred twenty-five million, two hundred forty-four thousand, five hundred seventy-four".