75475033426549 has 2 divisors, whose sum is σ = 75475033426550. Its totient is φ = 75475033426548.

The previous prime is 75475033426501. The next prime is 75475033426553. The reversal of 75475033426549 is 94562433057457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38577390544900 + 36897642881649 = 6211070^2 + 6074343^2 .

It is a cyclic number.

It is not a de Polignac number, because 75475033426549 - 2¹¹ = 75475033424501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75475033426349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37737516713274 + 37737516713275.

It is an arithmetic number, because the mean of its divisors is an integer number (37737516713275).

Almost surely, 2^{75475033426549} is an apocalyptic number.

It is an amenable number.

75475033426549 is a deficient number, since it is larger than the sum of its proper divisors (1).

75475033426549 is an equidigital number, since it uses as much as digits as its factorization.

75475033426549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024000, while the sum is 64.

The spelling of 75475033426549 in words is "seventy-five trillion, four hundred seventy-five billion, thirty-three million, four hundred twenty-six thousand, five hundred forty-nine".