75955509949 has 16 divisors (see below), whose sum is σ = 83426078016. Its totient is φ = 68579596800.

The previous prime is 75955509947. The next prime is 75955509991. The reversal of 75955509949 is 94990555957.

It is not a de Polignac number, because 75955509949 - 2¹ = 75955509947 is a prime.

It is a super-2 number, since 2×75955509949² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75955509947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4362349 + ... + 4379725.

It is an arithmetic number, because the mean of its divisors is an integer number (5214129876).

Almost surely, 2^75955509949 is an apocalyptic number.

It is an amenable number.

75955509949 is a deficient number, since it is larger than the sum of its proper divisors (7470568067).

75955509949 is a wasteful number, since it uses less digits than its factorization.

75955509949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20076.

The product of its (nonzero) digits is 114817500, while the sum is 67.

The spelling of 75955509949 in words is "seventy-five billion, nine hundred fifty-five million, five hundred nine thousand, nine hundred forty-nine".