8372753621 has 2 divisors, whose sum is σ = 8372753622. Its totient is φ = 8372753620.

The previous prime is 8372753611. The next prime is 8372753629. The reversal of 8372753621 is 1263572738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6026416900 + 2346336721 = 77630^2 + 48439^2 .

It is a cyclic number.

It is not a de Polignac number, because 8372753621 - 2²⁶ = 8305644757 is a prime.

It is a super-2 number, since 2×8372753621² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8372753629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4186376810 + 4186376811.

It is an arithmetic number, because the mean of its divisors is an integer number (4186376811).

Almost surely, 2^8372753621 is an apocalyptic number.

It is an amenable number.

8372753621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8372753621 is an equidigital number, since it uses as much as digits as its factorization.

8372753621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 8372753621 is about 91502.7519859376. The cubic root of 8372753621 is about 2030.5924662980.

The spelling of 8372753621 in words is "eight billion, three hundred seventy-two million, seven hundred fifty-three thousand, six hundred twenty-one".