43473157373 has 2 divisors, whose sum is σ = 43473157374. Its totient is φ = 43473157372.

The previous prime is 43473157307. The next prime is 43473157447. The reversal of 43473157373 is 37375137434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41729092729 + 1744064644 = 204277^2 + 41762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43473157373 is a prime.

It is a super-2 number, since 2×43473157373² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43473157073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21736578686 + 21736578687.

It is an arithmetic number, because the mean of its divisors is an integer number (21736578687).

Almost surely, 2^43473157373 is an apocalyptic number.

It is an amenable number.

43473157373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43473157373 is an equidigital number, since it uses as much as digits as its factorization.

43473157373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 47.

The spelling of 43473157373 in words is "forty-three billion, four hundred seventy-three million, one hundred fifty-seven thousand, three hundred seventy-three".