66431075614674 has 16 divisors (see below), whose sum is σ = 137148027075840. Its totient is φ = 21429379230480.

The previous prime is 66431075614661. The next prime is 66431075614693. The reversal of 66431075614674 is 47641657013466.

It is a happy 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, 178578160069 + ... + 178578160440.

It is an arithmetic number, because the mean of its divisors is an integer number (8571751692240).

Almost surely, 2^{66431075614674} is an apocalyptic number.

66431075614674 is an abundant number, since it is smaller than the sum of its proper divisors (70716951461166).

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

66431075614674 is a wasteful number, since it uses less digits than its factorization.

66431075614674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357156320545.

The product of its (nonzero) digits is 60963840, while the sum is 60.

The spelling of 66431075614674 in words is "sixty-six trillion, four hundred thirty-one billion, seventy-five million, six hundred fourteen thousand, six hundred seventy-four".