53671685187 has 4 divisors (see below), whose sum is σ = 71562246920. Its totient is φ = 35781123456.

The previous prime is 53671685183. The next prime is 53671685231. The reversal of 53671685187 is 78158617635.

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

It is not a de Polignac number, because 53671685187 - 2² = 53671685183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53671685183) 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, 8945280862 + ... + 8945280867.

It is an arithmetic number, because the mean of its divisors is an integer number (17890561730).

Almost surely, 2^53671685187 is an apocalyptic number.

53671685187 is a deficient number, since it is larger than the sum of its proper divisors (17890561733).

53671685187 is a wasteful number, since it uses less digits than its factorization.

53671685187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17890561732.

The product of its digits is 8467200, while the sum is 57.

The spelling of 53671685187 in words is "fifty-three billion, six hundred seventy-one million, six hundred eighty-five thousand, one hundred eighty-seven".