75452217431 has 2 divisors, whose sum is σ = 75452217432. Its totient is φ = 75452217430.

The previous prime is 75452217413. The next prime is 75452217443. The reversal of 75452217431 is 13471225457.

Together with previous prime (75452217413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75452217431 is a prime.

It is a super-2 number, since 2×75452217431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75452217331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37726108715 + 37726108716.

It is an arithmetic number, because the mean of its divisors is an integer number (37726108716).

Almost surely, 2^75452217431 is an apocalyptic number.

75452217431 is a deficient number, since it is larger than the sum of its proper divisors (1).

75452217431 is an equidigital number, since it uses as much as digits as its factorization.

75452217431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 41.

The spelling of 75452217431 in words is "seventy-five billion, four hundred fifty-two million, two hundred seventeen thousand, four hundred thirty-one".