56486171487 has 4 divisors (see below), whose sum is σ = 75314895320. Its totient is φ = 37657447656.

The previous prime is 56486171479. The next prime is 56486171501. The reversal of 56486171487 is 78417168465.

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

It is not a de Polignac number, because 56486171487 - 2³ = 56486171479 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 (56486151487) 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, 9414361912 + ... + 9414361917.

It is an arithmetic number, because the mean of its divisors is an integer number (18828723830).

Almost surely, 2^56486171487 is an apocalyptic number.

56486171487 is a deficient number, since it is larger than the sum of its proper divisors (18828723833).

56486171487 is a wasteful number, since it uses less digits than its factorization.

56486171487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18828723832.

The product of its digits is 9031680, while the sum is 57.

The spelling of 56486171487 in words is "fifty-six billion, four hundred eighty-six million, one hundred seventy-one thousand, four hundred eighty-seven".