75575633657557 has 4 divisors (see below), whose sum is σ = 82446145808256. Its totient is φ = 68705121506860.

The previous prime is 75575633657521. The next prime is 75575633657567.

75575633657557 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75575633657557 - 2¹⁵ = 75575633624789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75575633657507) 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, 3435256075333 + ... + 3435256075354.

It is an arithmetic number, because the mean of its divisors is an integer number (20611536452064).

Almost surely, 2^{75575633657557} is an apocalyptic number.

It is an amenable number.

75575633657557 is a deficient number, since it is larger than the sum of its proper divisors (6870512150699).

75575633657557 is a wasteful number, since it uses less digits than its factorization.

75575633657557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870512150698.

The product of its digits is 12155062500, while the sum is 76.

The spelling of 75575633657557 in words is "seventy-five trillion, five hundred seventy-five billion, six hundred thirty-three million, six hundred fifty-seven thousand, five hundred fifty-seven".