672104261327221 has 8 divisors (see below), whose sum is σ = 680156851405824. Its totient is φ = 664084472023680.

The previous prime is 672104261327209. The next prime is 672104261327243. The reversal of 672104261327221 is 122723162401276.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672104261327221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672104261325221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8200152540 + ... + 8200234501.

It is an arithmetic number, because the mean of its divisors is an integer number (85019606425728).

Almost surely, 2^{672104261327221} is an apocalyptic number.

It is an amenable number.

672104261327221 is a deficient number, since it is larger than the sum of its proper divisors (8052590078603).

672104261327221 is a wasteful number, since it uses less digits than its factorization.

672104261327221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16400387531.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 672104261327221 in words is "six hundred seventy-two trillion, one hundred four billion, two hundred sixty-one million, three hundred twenty-seven thousand, two hundred twenty-one".