20160576557 has 4 divisors (see below), whose sum is σ = 21993356256. Its totient is φ = 18327796860.

The previous prime is 20160576551. The next prime is 20160576571. The reversal of 20160576557 is 75567506102.

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 20160576557 - 2⁶ = 20160576493 is a prime.

It is a super-2 number, since 2×20160576557² (a number of 21 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 (20160576551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916389833 + ... + 916389854.

It is an arithmetic number, because the mean of its divisors is an integer number (5498339064).

Almost surely, 2^20160576557 is an apocalyptic number.

It is an amenable number.

20160576557 is a deficient number, since it is larger than the sum of its proper divisors (1832779699).

20160576557 is a wasteful number, since it uses less digits than its factorization.

20160576557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832779698.

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 20160576557 in words is "twenty billion, one hundred sixty million, five hundred seventy-six thousand, five hundred fifty-seven".