75118912457 has 2 divisors, whose sum is σ = 75118912458. Its totient is φ = 75118912456.

The previous prime is 75118912339. The next prime is 75118912493. The reversal of 75118912457 is 75421981157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67361530681 + 7757381776 = 259541^2 + 88076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75118912457 is a prime.

It is not a weakly prime, because it can be changed into another prime (72118912457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37559456228 + 37559456229.

It is an arithmetic number, because the mean of its divisors is an integer number (37559456229).

Almost surely, 2^75118912457 is an apocalyptic number.

It is an amenable number.

75118912457 is a deficient number, since it is larger than the sum of its proper divisors (1).

75118912457 is an equidigital number, since it uses as much as digits as its factorization.

75118912457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 50.

The spelling of 75118912457 in words is "seventy-five billion, one hundred eighteen million, nine hundred twelve thousand, four hundred fifty-seven".