4320872672681 has 4 divisors (see below), whose sum is σ = 4508736701952. Its totient is φ = 4133008643412.

The previous prime is 4320872672639. The next prime is 4320872672689. The reversal of 4320872672681 is 1862762780234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4320872672681 is a prime.

It is a super-2 number, since 2×4320872672681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4320872672689) 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, 93932014601 + ... + 93932014646.

It is an arithmetic number, because the mean of its divisors is an integer number (1127184175488).

Almost surely, 2^{4320872672681} is an apocalyptic number.

It is an amenable number.

4320872672681 is a deficient number, since it is larger than the sum of its proper divisors (187864029271).

4320872672681 is a wasteful number, since it uses less digits than its factorization.

4320872672681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187864029270.

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 4320872672681 in words is "four trillion, three hundred twenty billion, eight hundred seventy-two million, six hundred seventy-two thousand, six hundred eighty-one".