863642843730 has 40 divisors (see below), whose sum is σ = 2322239648652. Its totient is φ = 230304758112.

The previous prime is 863642843663. The next prime is 863642843743. The reversal of 863642843730 is 37348246368.

863642843730 is a `hidden beast` number, since 86 + 36 + 428 + 43 + 73 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 798233246721 + 65409597009 = 893439^2 + 255753^2 .

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 a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 533112057 + ... + 533113676.

Almost surely, 2^863642843730 is an apocalyptic number.

863642843730 is an abundant number, since it is smaller than the sum of its proper divisors (1458596804922).

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

863642843730 is a wasteful number, since it uses less digits than its factorization.

863642843730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066225752 (or 1066225743 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 863642843730 in words is "eight hundred sixty-three billion, six hundred forty-two million, eight hundred forty-three thousand, seven hundred thirty".