75206172427 has 2 divisors, whose sum is σ = 75206172428. Its totient is φ = 75206172426.

The previous prime is 75206172383. The next prime is 75206172467. The reversal of 75206172427 is 72427160257.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75206172427 - 2¹⁹ = 75205648139 is a prime.

It is a super-2 number, since 2×75206172427² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75206172467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37603086213 + 37603086214.

It is an arithmetic number, because the mean of its divisors is an integer number (37603086214).

Almost surely, 2^75206172427 is an apocalyptic number.

75206172427 is a deficient number, since it is larger than the sum of its proper divisors (1).

75206172427 is an equidigital number, since it uses as much as digits as its factorization.

75206172427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 75206172427 in words is "seventy-five billion, two hundred six million, one hundred seventy-two thousand, four hundred twenty-seven".