75460639409 has 2 divisors, whose sum is σ = 75460639410. Its totient is φ = 75460639408.

The previous prime is 75460639379. The next prime is 75460639411. The reversal of 75460639409 is 90493606457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74186506384 + 1274133025 = 272372^2 + 35695^2 .

It is a cyclic number.

It is not a de Polignac number, because 75460639409 - 2¹⁶ = 75460573873 is a prime.

Together with 75460639411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75460659409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37730319704 + 37730319705.

It is an arithmetic number, because the mean of its divisors is an integer number (37730319705).

Almost surely, 2^75460639409 is an apocalyptic number.

It is an amenable number.

75460639409 is a deficient number, since it is larger than the sum of its proper divisors (1).

75460639409 is an equidigital number, since it uses as much as digits as its factorization.

75460639409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 75460639409 in words is "seventy-five billion, four hundred sixty million, six hundred thirty-nine thousand, four hundred nine".