7221716231631 has 16 divisors (see below), whose sum is σ = 10505126096640. Its totient is φ = 4376459558720.

The previous prime is 7221716231617. The next prime is 7221716231641. The reversal of 7221716231631 is 1361326171227.

It is a cyclic number.

It is not a de Polignac number, because 7221716231631 - 2¹⁰ = 7221716230607 is a prime.

It is a super-2 number, since 2×7221716231631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221716231641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8020011 + ... + 8874908.

It is an arithmetic number, because the mean of its divisors is an integer number (656570381040).

Almost surely, 2^{7221716231631} is an apocalyptic number.

7221716231631 is a deficient number, since it is larger than the sum of its proper divisors (3283409865009).

7221716231631 is a wasteful number, since it uses less digits than its factorization.

7221716231631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16907886.

The product of its digits is 127008, while the sum is 42.

The spelling of 7221716231631 in words is "seven trillion, two hundred twenty-one billion, seven hundred sixteen million, two hundred thirty-one thousand, six hundred thirty-one".