73990381373 has 2 divisors, whose sum is σ = 73990381374. Its totient is φ = 73990381372.

The previous prime is 73990381319. The next prime is 73990381379. The reversal of 73990381373 is 37318309937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57370788484 + 16619592889 = 239522^2 + 128917^2 .

It is an emirp because it is prime and its reverse (37318309937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73990381373 - 2¹⁶ = 73990315837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73990381379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36995190686 + 36995190687.

It is an arithmetic number, because the mean of its divisors is an integer number (36995190687).

Almost surely, 2^73990381373 is an apocalyptic number.

It is an amenable number.

73990381373 is a deficient number, since it is larger than the sum of its proper divisors (1).

73990381373 is an equidigital number, since it uses as much as digits as its factorization.

73990381373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 53.

The spelling of 73990381373 in words is "seventy-three billion, nine hundred ninety million, three hundred eighty-one thousand, three hundred seventy-three".