864545481828 has 36 divisors (see below), whose sum is σ = 2497575837120. Its totient is φ = 247012994736.

The previous prime is 864545481827. The next prime is 864545481829. The reversal of 864545481828 is 828184545468.

864545481828 is a `hidden beast` number, since 8 + 6 + 4 + 5 + 4 + 548 + 1 + 82 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (864545481827) and next prime (864545481829).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (864545481823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1715367768 + ... + 1715368271.

Almost surely, 2^864545481828 is an apocalyptic number.

It is an amenable number.

864545481828 is an abundant number, since it is smaller than the sum of its proper divisors (1633030355292).

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

864545481828 is a wasteful number, since it uses less digits than its factorization.

864545481828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430736056 (or 3430736051 counting only the distinct ones).

The product of its digits is 78643200, while the sum is 63.

The spelling of 864545481828 in words is "eight hundred sixty-four billion, five hundred forty-five million, four hundred eighty-one thousand, eight hundred twenty-eight".