7555442445557 has 4 divisors (see below), whose sum is σ = 7555466958636. Its totient is φ = 7555417932480.

The previous prime is 7555442445539. The next prime is 7555442445613.

7555442445557 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2501034709156 + 5054407736401 = 1581466^2 + 2248201^2 .

It is a cyclic number.

It is not a de Polignac number, because 7555442445557 - 2¹⁶ = 7555442380021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7555442445557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7555442448557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11788244 + ... + 12412637.

It is an arithmetic number, because the mean of its divisors is an integer number (1888866739659).

Almost surely, 2^{7555442445557} is an apocalyptic number.

It is an amenable number.

7555442445557 is a deficient number, since it is larger than the sum of its proper divisors (24513079).

7555442445557 is a wasteful number, since it uses less digits than its factorization.

7555442445557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24513078.

The product of its digits is 392000000, while the sum is 62.

The spelling of 7555442445557 in words is "seven trillion, five hundred fifty-five billion, four hundred forty-two million, four hundred forty-five thousand, five hundred fifty-seven".