7672834621421 has 2 divisors, whose sum is σ = 7672834621422. Its totient is φ = 7672834621420.

The previous prime is 7672834621379. The next prime is 7672834621513. The reversal of 7672834621421 is 1241264382767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4697947875625 + 2974886745796 = 2167475^2 + 1724786^2 .

It is an emirp because it is prime and its reverse (1241264382767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7672834621421 - 2¹⁰ = 7672834620397 is a prime.

It is a super-2 number, since 2×7672834621421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7672834624421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3836417310710 + 3836417310711.

It is an arithmetic number, because the mean of its divisors is an integer number (3836417310711).

Almost surely, 2^{7672834621421} is an apocalyptic number.

It is an amenable number.

7672834621421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7672834621421 is an equidigital number, since it uses as much as digits as its factorization.

7672834621421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 53.

The spelling of 7672834621421 in words is "seven trillion, six hundred seventy-two billion, eight hundred thirty-four million, six hundred twenty-one thousand, four hundred twenty-one".