56851442287 has 8 divisors (see below), whose sum is σ = 59872176000. Its totient is φ = 53833563864.

The previous prime is 56851442281. The next prime is 56851442303. The reversal of 56851442287 is 78224415865.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56851442287 is a prime.

It is a super-2 number, since 2×56851442287² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56851442281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672883 + ... + 752644.

It is an arithmetic number, because the mean of its divisors is an integer number (7484022000).

Almost surely, 2^56851442287 is an apocalyptic number.

56851442287 is a deficient number, since it is larger than the sum of its proper divisors (3020733713).

56851442287 is a wasteful number, since it uses less digits than its factorization.

56851442287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427645.

The product of its digits is 4300800, while the sum is 52.

The spelling of 56851442287 in words is "fifty-six billion, eight hundred fifty-one million, four hundred forty-two thousand, two hundred eighty-seven".