75404413493 has 2 divisors, whose sum is σ = 75404413494. Its totient is φ = 75404413492.

The previous prime is 75404413391. The next prime is 75404413561. The reversal of 75404413493 is 39431440457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75370564369 + 33849124 = 274537^2 + 5818^2 .

It is a cyclic number.

It is not a de Polignac number, because 75404413493 - 2¹² = 75404409397 is a prime.

It is a super-2 number, since 2×75404413493² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75404413193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37702206746 + 37702206747.

It is an arithmetic number, because the mean of its divisors is an integer number (37702206747).

Almost surely, 2^75404413493 is an apocalyptic number.

It is an amenable number.

75404413493 is a deficient number, since it is larger than the sum of its proper divisors (1).

75404413493 is an equidigital number, since it uses as much as digits as its factorization.

75404413493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 75404413493 in words is "seventy-five billion, four hundred four million, four hundred thirteen thousand, four hundred ninety-three".