66274579582 has 4 divisors (see below), whose sum is σ = 99411869376. Its totient is φ = 33137289790.

The previous prime is 66274579571. The next prime is 66274579589. The reversal of 66274579582 is 28597547266.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66274579582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66274579589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16568644894 + ... + 16568644897.

It is an arithmetic number, because the mean of its divisors is an integer number (24852967344).

Almost surely, 2^66274579582 is an apocalyptic number.

66274579582 is a deficient number, since it is larger than the sum of its proper divisors (33137289794).

66274579582 is a wasteful number, since it uses less digits than its factorization.

66274579582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33137289793.

The product of its digits is 50803200, while the sum is 61.

The spelling of 66274579582 in words is "sixty-six billion, two hundred seventy-four million, five hundred seventy-nine thousand, five hundred eighty-two".