74320768146533 has 2 divisors, whose sum is σ = 74320768146534. Its totient is φ = 74320768146532.

The previous prime is 74320768146503. The next prime is 74320768146607. The reversal of 74320768146533 is 33564186702347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40493597717764 + 33827170428769 = 6363458^2 + 5816113^2 .

It is a cyclic number.

It is not a de Polignac number, because 74320768146533 - 2⁴⁴ = 56728582102117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74320768146503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37160384073266 + 37160384073267.

It is an arithmetic number, because the mean of its divisors is an integer number (37160384073267).

Almost surely, 2^{74320768146533} is an apocalyptic number.

It is an amenable number.

74320768146533 is a deficient number, since it is larger than the sum of its proper divisors (1).

74320768146533 is an equidigital number, since it uses as much as digits as its factorization.

74320768146533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 59.

The spelling of 74320768146533 in words is "seventy-four trillion, three hundred twenty billion, seven hundred sixty-eight million, one hundred forty-six thousand, five hundred thirty-three".