57187561111 has 8 divisors (see below), whose sum is σ = 61694018064. Its totient is φ = 52808046720.

The previous prime is 57187561051. The next prime is 57187561129. The reversal of 57187561111 is 11116578175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57187561111 - 2¹⁷ = 57187430039 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 (57187561811) 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 7 ways as a sum of consecutive naturals, for example, 31734705 + ... + 31736506.

It is an arithmetic number, because the mean of its divisors is an integer number (7711752258).

Almost surely, 2^57187561111 is an apocalyptic number.

57187561111 is a deficient number, since it is larger than the sum of its proper divisors (4506456953).

57187561111 is a wasteful number, since it uses less digits than its factorization.

57187561111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63471281.

The product of its digits is 58800, while the sum is 43.

The spelling of 57187561111 in words is "fifty-seven billion, one hundred eighty-seven million, five hundred sixty-one thousand, one hundred eleven".