75720762473 has 2 divisors, whose sum is σ = 75720762474. Its totient is φ = 75720762472.

The previous prime is 75720762463. The next prime is 75720762521. The reversal of 75720762473 is 37426702757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70869361369 + 4851401104 = 266213^2 + 69652^2 .

It is an emirp because it is prime and its reverse (37426702757) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75720762473 - 2¹⁰ = 75720761449 is a prime.

It is a super-3 number, since 3×75720762473³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (75720762433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37860381236 + 37860381237.

It is an arithmetic number, because the mean of its divisors is an integer number (37860381237).

Almost surely, 2^75720762473 is an apocalyptic number.

It is an amenable number.

75720762473 is a deficient number, since it is larger than the sum of its proper divisors (1).

75720762473 is an equidigital number, since it uses as much as digits as its factorization.

75720762473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3457440, while the sum is 50.

The spelling of 75720762473 in words is "seventy-five billion, seven hundred twenty million, seven hundred sixty-two thousand, four hundred seventy-three".