56861286087 has 16 divisors (see below), whose sum is σ = 78532512480. Its totient is φ = 36552230400.

The previous prime is 56861286017. The next prime is 56861286101. The reversal of 56861286087 is 78068216865.

It is a happy number.

It is not a de Polignac number, because 56861286087 - 2¹² = 56861281991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56861286007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363214 + ... + 495627.

It is an arithmetic number, because the mean of its divisors is an integer number (4908282030).

Almost surely, 2^56861286087 is an apocalyptic number.

56861286087 is a deficient number, since it is larger than the sum of its proper divisors (21671226393).

56861286087 is a wasteful number, since it uses less digits than its factorization.

56861286087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859634.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 56861286087 in words is "fifty-six billion, eight hundred sixty-one million, two hundred eighty-six thousand, eighty-seven".