75545572643 has 2 divisors, whose sum is σ = 75545572644. Its totient is φ = 75545572642.

The previous prime is 75545572559. The next prime is 75545572747. The reversal of 75545572643 is 34627554557.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75545572643 - 2¹² = 75545568547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (75545572343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37772786321 + 37772786322.

It is an arithmetic number, because the mean of its divisors is an integer number (37772786322).

Almost surely, 2^75545572643 is an apocalyptic number.

75545572643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75545572643 is an equidigital number, since it uses as much as digits as its factorization.

75545572643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640000, while the sum is 53.

The spelling of 75545572643 in words is "seventy-five billion, five hundred forty-five million, five hundred seventy-two thousand, six hundred forty-three".