7172672702281 has 4 divisors (see below), whose sum is σ = 7347615938964. Its totient is φ = 6997729465600.

The previous prime is 7172672702257. The next prime is 7172672702329. The reversal of 7172672702281 is 1822072762717.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1698434497600 + 5474238204681 = 1303240^2 + 2339709^2 .

It is a cyclic number.

It is not a de Polignac number, because 7172672702281 - 2⁹ = 7172672701769 is a prime.

It is a super-2 number, since 2×7172672702281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7172672702581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87471618280 + ... + 87471618361.

It is an arithmetic number, because the mean of its divisors is an integer number (1836903984741).

Almost surely, 2^{7172672702281} is an apocalyptic number.

It is an amenable number.

7172672702281 is a deficient number, since it is larger than the sum of its proper divisors (174943236683).

7172672702281 is a wasteful number, since it uses less digits than its factorization.

7172672702281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174943236682.

The product of its (nonzero) digits is 1843968, while the sum is 52.

The spelling of 7172672702281 in words is "seven trillion, one hundred seventy-two billion, six hundred seventy-two million, seven hundred two thousand, two hundred eighty-one".