66570322454 has 4 divisors (see below), whose sum is σ = 99855483684. Its totient is φ = 33285161226.

The previous prime is 66570322453. The next prime is 66570322463. The reversal of 66570322454 is 45422307566.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570322453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16642580612 + ... + 16642580615.

It is an arithmetic number, because the mean of its divisors is an integer number (24963870921).

Almost surely, 2^66570322454 is an apocalyptic number.

66570322454 is a deficient number, since it is larger than the sum of its proper divisors (33285161230).

66570322454 is a wasteful number, since it uses less digits than its factorization.

66570322454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33285161229.

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 66570322454 in words is "sixty-six billion, five hundred seventy million, three hundred twenty-two thousand, four hundred fifty-four".