75758243994 has 24 divisors (see below), whose sum is σ = 165595458132. Its totient is φ = 25029271680.

The previous prime is 75758243987. The next prime is 75758244097. The reversal of 75758243994 is 49934285757.

75758243994 is a `hidden beast` number, since 7 + 5 + 7 + 582 + 43 + 9 + 9 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49256031969 + 26502212025 = 221937^2 + 162795^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18620937 + ... + 18625004.

Almost surely, 2^75758243994 is an apocalyptic number.

75758243994 is an abundant number, since it is smaller than the sum of its proper divisors (89837214138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75758243994 is a wasteful number, since it uses less digits than its factorization.

75758243994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37246062 (or 37246059 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 75758243994 in words is "seventy-five billion, seven hundred fifty-eight million, two hundred forty-three thousand, nine hundred ninety-four".