75774438385 has 32 divisors (see below), whose sum is σ = 98146339200. Its totient is φ = 55951272960.

The previous prime is 75774438379. The next prime is 75774438409. The reversal of 75774438385 is 58383447757.

It is not a de Polignac number, because 75774438385 - 2¹⁵ = 75774405617 is a prime.

It is a super-2 number, since 2×75774438385² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2083255 + ... + 2119315.

It is an arithmetic number, because the mean of its divisors is an integer number (3067073100).

Almost surely, 2^75774438385 is an apocalyptic number.

It is an amenable number.

75774438385 is a deficient number, since it is larger than the sum of its proper divisors (22371900815).

75774438385 is a wasteful number, since it uses less digits than its factorization.

75774438385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36561.

The product of its digits is 79027200, while the sum is 61.

The spelling of 75774438385 in words is "seventy-five billion, seven hundred seventy-four million, four hundred thirty-eight thousand, three hundred eighty-five".