75404701393 has 24 divisors (see below), whose sum is σ = 90816287400. Its totient is φ = 62351670528.

The previous prime is 75404701391. The next prime is 75404701423. The reversal of 75404701393 is 39310740457.

It can be written as a sum of positive squares in 4 ways, for example, as 38405024784 + 36999676609 = 195972^2 + 192353^2 .

It is not a de Polignac number, because 75404701393 - 2¹ = 75404701391 is a prime.

It is a super-2 number, since 2×75404701393² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75404701391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1724821 + ... + 1767997.

It is an arithmetic number, because the mean of its divisors is an integer number (3784011975).

Almost surely, 2^75404701393 is an apocalyptic number.

It is an amenable number.

75404701393 is a deficient number, since it is larger than the sum of its proper divisors (15411586007).

75404701393 is a wasteful number, since it uses less digits than its factorization.

75404701393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44449 (or 44442 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 75404701393 in words is "seventy-five billion, four hundred four million, seven hundred one thousand, three hundred ninety-three".