75454433442457 has 2 divisors, whose sum is σ = 75454433442458. Its totient is φ = 75454433442456.

The previous prime is 75454433442449. The next prime is 75454433442497. The reversal of 75454433442457 is 75424433445457.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75454309365136 + 124077321 = 8686444^2 + 11139^2 .

It is a cyclic number.

It is not a de Polignac number, because 75454433442457 - 2³ = 75454433442449 is a prime.

It is a super-2 number, since 2×75454433442457² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75454433442395 and 75454433442404.

It is not a weakly prime, because it can be changed into another prime (75454433442497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37727216721228 + 37727216721229.

It is an arithmetic number, because the mean of its divisors is an integer number (37727216721229).

Almost surely, 2^{75454433442457} is an apocalyptic number.

It is an amenable number.

75454433442457 is a deficient number, since it is larger than the sum of its proper divisors (1).

75454433442457 is an equidigital number, since it uses as much as digits as its factorization.

75454433442457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584000, while the sum is 61.

The spelling of 75454433442457 in words is "seventy-five trillion, four hundred fifty-four billion, four hundred thirty-three million, four hundred forty-two thousand, four hundred fifty-seven".