66319711674 has 16 divisors (see below), whose sum is σ = 133433673408. Its totient is φ = 21974195552.

The previous prime is 66319711669. The next prime is 66319711723. The reversal of 66319711674 is 47611791366.

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, 33092667 + ... + 33094670.

It is an arithmetic number, because the mean of its divisors is an integer number (8339604588).

Almost surely, 2^66319711674 is an apocalyptic number.

66319711674 is an abundant number, since it is smaller than the sum of its proper divisors (67113961734).

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

66319711674 is a wasteful number, since it uses less digits than its factorization.

66319711674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66187509.

The product of its digits is 1143072, while the sum is 51.

The spelling of 66319711674 in words is "sixty-six billion, three hundred nineteen million, seven hundred eleven thousand, six hundred seventy-four".