74389461389461 has 2 divisors, whose sum is σ = 74389461389462. Its totient is φ = 74389461389460.

The previous prime is 74389461389443. The next prime is 74389461389483. The reversal of 74389461389461 is 16498316498347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42086436608836 + 32303024780625 = 6487406^2 + 5683575^2 .

It is an emirp because it is prime and its reverse (16498316498347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74389461389461 - 2²³ = 74389453000853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74389461389491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37194730694730 + 37194730694731.

It is an arithmetic number, because the mean of its divisors is an integer number (37194730694731).

Almost surely, 2^{74389461389461} is an apocalyptic number.

It is an amenable number.

74389461389461 is a deficient number, since it is larger than the sum of its proper divisors (1).

74389461389461 is an equidigital number, since it uses as much as digits as its factorization.

74389461389461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752467968, while the sum is 73.

The spelling of 74389461389461 in words is "seventy-four trillion, three hundred eighty-nine billion, four hundred sixty-one million, three hundred eighty-nine thousand, four hundred sixty-one".