74541773601557 has 2 divisors, whose sum is σ = 74541773601558. Its totient is φ = 74541773601556.

The previous prime is 74541773601479. The next prime is 74541773601577. The reversal of 74541773601557 is 75510637714547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38898497501956 + 35643276099601 = 6236866^2 + 5970199^2 .

It is a cyclic number.

It is not a de Polignac number, because 74541773601557 - 2²⁴ = 74541756824341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74541773601557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74541773601577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37270886800778 + 37270886800779.

It is an arithmetic number, because the mean of its divisors is an integer number (37270886800779).

Almost surely, 2^{74541773601557} is an apocalyptic number.

It is an amenable number.

74541773601557 is a deficient number, since it is larger than the sum of its proper divisors (1).

74541773601557 is an equidigital number, since it uses as much as digits as its factorization.

74541773601557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86436000, while the sum is 62.

The spelling of 74541773601557 in words is "seventy-four trillion, five hundred forty-one billion, seven hundred seventy-three million, six hundred one thousand, five hundred fifty-seven".