7644085993451 has 2 divisors, whose sum is σ = 7644085993452. Its totient is φ = 7644085993450.

The previous prime is 7644085993421. The next prime is 7644085993501. The reversal of 7644085993451 is 1543995804467.

It is a weak prime.

It is an emirp because it is prime and its reverse (1543995804467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7644085993451 - 2¹⁸ = 7644085731307 is a prime.

It is a super-2 number, since 2×7644085993451² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7644085993421) 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, 3822042996725 + 3822042996726.

It is an arithmetic number, because the mean of its divisors is an integer number (3822042996726).

Almost surely, 2^{7644085993451} is an apocalyptic number.

7644085993451 is a deficient number, since it is larger than the sum of its proper divisors (1).

7644085993451 is an equidigital number, since it uses as much as digits as its factorization.

7644085993451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 130636800, while the sum is 65.

The spelling of 7644085993451 in words is "seven trillion, six hundred forty-four billion, eighty-five million, nine hundred ninety-three thousand, four hundred fifty-one".