75388139573 has 2 divisors, whose sum is σ = 75388139574. Its totient is φ = 75388139572.

The previous prime is 75388139507. The next prime is 75388139579. The reversal of 75388139573 is 37593188357.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68247382564 + 7140757009 = 261242^2 + 84503^2 .

It is a cyclic number.

It is not a de Polignac number, because 75388139573 - 2¹² = 75388135477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75388139579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37694069786 + 37694069787.

It is an arithmetic number, because the mean of its divisors is an integer number (37694069787).

Almost surely, 2^75388139573 is an apocalyptic number.

It is an amenable number.

75388139573 is a deficient number, since it is larger than the sum of its proper divisors (1).

75388139573 is an equidigital number, since it uses as much as digits as its factorization.

75388139573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 59.

The spelling of 75388139573 in words is "seventy-five billion, three hundred eighty-eight million, one hundred thirty-nine thousand, five hundred seventy-three".