57815556643 has 4 divisors (see below), whose sum is σ = 62262907168. Its totient is φ = 53368206120.

The previous prime is 57815556641. The next prime is 57815556679. The reversal of 57815556643 is 34665551875.

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

It is a cyclic number.

It is not a de Polignac number, because 57815556643 - 2¹ = 57815556641 is a prime.

It is a super-3 number, since 3×57815556643³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57815556641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2223675243 + ... + 2223675268.

It is an arithmetic number, because the mean of its divisors is an integer number (15565726792).

Almost surely, 2^57815556643 is an apocalyptic number.

57815556643 is a deficient number, since it is larger than the sum of its proper divisors (4447350525).

57815556643 is a wasteful number, since it uses less digits than its factorization.

57815556643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447350524.

The product of its digits is 15120000, while the sum is 55.

The spelling of 57815556643 in words is "fifty-seven billion, eight hundred fifteen million, five hundred fifty-six thousand, six hundred forty-three".