75040603381 has 2 divisors, whose sum is σ = 75040603382. Its totient is φ = 75040603380.

The previous prime is 75040603369. The next prime is 75040603487. The reversal of 75040603381 is 18330604057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48026722500 + 27013880881 = 219150^2 + 164359^2 .

It is an emirp because it is prime and its reverse (18330604057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75040603381 - 2⁹ = 75040602869 is a prime.

It is a super-2 number, since 2×75040603381² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75040603381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75040603361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37520301690 + 37520301691.

It is an arithmetic number, because the mean of its divisors is an integer number (37520301691).

Almost surely, 2^75040603381 is an apocalyptic number.

It is an amenable number.

75040603381 is a deficient number, since it is larger than the sum of its proper divisors (1).

75040603381 is an equidigital number, since it uses as much as digits as its factorization.

75040603381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 75040603381 in words is "seventy-five billion, forty million, six hundred three thousand, three hundred eighty-one".