75632481409 has 2 divisors, whose sum is σ = 75632481410. Its totient is φ = 75632481408.

The previous prime is 75632481343. The next prime is 75632481413. The reversal of 75632481409 is 90418423657.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73129680625 + 2502800784 = 270425^2 + 50028^2 .

It is a cyclic number.

It is not a de Polignac number, because 75632481409 - 2⁹ = 75632480897 is a prime.

It is not a weakly prime, because it can be changed into another prime (75612481409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37816240704 + 37816240705.

It is an arithmetic number, because the mean of its divisors is an integer number (37816240705).

It is a 1-persistent number, because it is pandigital, but 2⋅75632481409 = 151264962818 is not.

Almost surely, 2^75632481409 is an apocalyptic number.

It is an amenable number.

75632481409 is a deficient number, since it is larger than the sum of its proper divisors (1).

75632481409 is an equidigital number, since it uses as much as digits as its factorization.

75632481409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

It can be divided in two parts, 7563248 and 1409, that added together give a palindrome (7564657).

The spelling of 75632481409 in words is "seventy-five billion, six hundred thirty-two million, four hundred eighty-one thousand, four hundred nine".