73971725033543 has 2 divisors, whose sum is σ = 73971725033544. Its totient is φ = 73971725033542.

The previous prime is 73971725033539. The next prime is 73971725033587. The reversal of 73971725033543 is 34533052717937.

It is a weak prime.

It is an emirp because it is prime and its reverse (34533052717937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73971725033543 - 2² = 73971725033539 is a prime.

It is a super-2 number, since 2×73971725033543² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73971725033443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36985862516771 + 36985862516772.

It is an arithmetic number, because the mean of its divisors is an integer number (36985862516772).

Almost surely, 2^{73971725033543} is an apocalyptic number.

73971725033543 is a deficient number, since it is larger than the sum of its proper divisors (1).

73971725033543 is an equidigital number, since it uses as much as digits as its factorization.

73971725033543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50009400, while the sum is 59.

The spelling of 73971725033543 in words is "seventy-three trillion, nine hundred seventy-one billion, seven hundred twenty-five million, thirty-three thousand, five hundred forty-three".