75555995557 has 12 divisors (see below), whose sum is σ = 88308228576. Its totient is φ = 64455342840.

The previous prime is 75555995527. The next prime is 75555995561. The reversal of 75555995557 is 75559955557.

It is not a de Polignac number, because 75555995557 - 2¹¹ = 75555993509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75555995492 and 75555995501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75555995527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3643593 + ... + 3664270.

It is an arithmetic number, because the mean of its divisors is an integer number (7359019048).

Almost surely, 2^75555995557 is an apocalyptic number.

It is an amenable number.

75555995557 is a deficient number, since it is larger than the sum of its proper divisors (12752233019).

75555995557 is a wasteful number, since it uses less digits than its factorization.

75555995557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308088 (or 7308081 counting only the distinct ones).

The product of its digits is 310078125, while the sum is 67.

The spelling of 75555995557 in words is "seventy-five billion, five hundred fifty-five million, nine hundred ninety-five thousand, five hundred fifty-seven".