56861267850 has 144 divisors (see below), whose sum is σ = 156024399960. Its totient is φ = 14843136000.

The previous prime is 56861267839. The next prime is 56861267861. The reversal of 56861267850 is 5876216865.

56861267850 is a `hidden beast` number, since 568 + 6 + 1 + 2 + 6 + 78 + 5 + 0 = 666.

56861267850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56861267839) and next prime (56861267861).

It can be written as a sum of positive squares in 12 ways, for example, as 317659329 + 56543608521 = 17823^2 + 237789^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4038022 + ... + 4052078.

Almost surely, 2^56861267850 is an apocalyptic number.

56861267850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56861267850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78012199980).

56861267850 is an abundant number, since it is smaller than the sum of its proper divisors (99163132110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56861267850 is a wasteful number, since it uses less digits than its factorization.

56861267850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14265 (or 14257 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 56861267850 in words is "fifty-six billion, eight hundred sixty-one million, two hundred sixty-seven thousand, eight hundred fifty".