66872272802 has 8 divisors (see below), whose sum is σ = 106208903916. Its totient is φ = 31469304832.

The previous prime is 66872272799. The next prime is 66872272807. The reversal of 66872272802 is 20827227866.

It can be written as a sum of positive squares in 2 ways, for example, as 64551056761 + 2321216041 = 254069^2 + 48179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66872272807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983415743 + ... + 983415810.

Almost surely, 2^66872272802 is an apocalyptic number.

66872272802 is a deficient number, since it is larger than the sum of its proper divisors (39336631114).

66872272802 is a wasteful number, since it uses less digits than its factorization.

66872272802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966831572.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 66872272802 in words is "sixty-six billion, eight hundred seventy-two million, two hundred seventy-two thousand, eight hundred two".