10865863520 has 48 divisors (see below), whose sum is σ = 25855336080. Its totient is φ = 4315067904.

The previous prime is 10865863493. The next prime is 10865863597. The reversal of 10865863520 is 2536856801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222047 + ... + 266526.

It is an arithmetic number, because the mean of its divisors is an integer number (538652835).

Almost surely, 2^10865863520 is an apocalyptic number.

10865863520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10865863520 is an abundant number, since it is smaller than the sum of its proper divisors (14989472560).

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

10865863520 is a wasteful number, since it uses less digits than its factorization.

10865863520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488727 (or 488719 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 10865863520 in words is "ten billion, eight hundred sixty-five million, eight hundred sixty-three thousand, five hundred twenty".