75143257393 has 2 divisors, whose sum is σ = 75143257394. Its totient is φ = 75143257392.

The previous prime is 75143257309. The next prime is 75143257411. The reversal of 75143257393 is 39375234157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56883681009 + 18259576384 = 238503^2 + 135128^2 .

It is a cyclic number.

It is not a de Polignac number, because 75143257393 - 2²⁵ = 75109702961 is a prime.

It is not a weakly prime, because it can be changed into another prime (75143257303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37571628696 + 37571628697.

It is an arithmetic number, because the mean of its divisors is an integer number (37571628697).

Almost surely, 2^75143257393 is an apocalyptic number.

It is an amenable number.

75143257393 is a deficient number, since it is larger than the sum of its proper divisors (1).

75143257393 is an equidigital number, since it uses as much as digits as its factorization.

75143257393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2381400, while the sum is 49.

The spelling of 75143257393 in words is "seventy-five billion, one hundred forty-three million, two hundred fifty-seven thousand, three hundred ninety-three".