75216144643 has 2 divisors, whose sum is σ = 75216144644. Its totient is φ = 75216144642.

The previous prime is 75216144629. The next prime is 75216144697. The reversal of 75216144643 is 34644161257.

It is a weak prime.

It is an emirp because it is prime and its reverse (34644161257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75216144643 - 2¹³ = 75216136451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75216144643.

It is not a weakly prime, because it can be changed into another prime (75216144623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37608072321 + 37608072322.

It is an arithmetic number, because the mean of its divisors is an integer number (37608072322).

Almost surely, 2^75216144643 is an apocalyptic number.

75216144643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75216144643 is an equidigital number, since it uses as much as digits as its factorization.

75216144643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

It can be divided in two parts, 7521614 and 4643, that added together give a palindrome (7526257).

The spelling of 75216144643 in words is "seventy-five billion, two hundred sixteen million, one hundred forty-four thousand, six hundred forty-three".