10864856720 has 40 divisors (see below), whose sum is σ = 25406840376. Its totient is φ = 4320816128.

The previous prime is 10864856711. The next prime is 10864856767. The reversal of 10864856720 is 2765846801.

It can be written as a sum of positive squares in 4 ways, for example, as 5334257296 + 5530599424 = 73036^2 + 74368^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10864856720² (a number of 21 digits) contains 22 as substring.

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, 378677 + ... + 406356.

Almost surely, 2^10864856720 is an apocalyptic number.

10864856720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10864856720 is an abundant number, since it is smaller than the sum of its proper divisors (14541983656).

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

10864856720 is a wasteful number, since it uses less digits than its factorization.

10864856720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785219 (or 785213 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 10864856720 in words is "ten billion, eight hundred sixty-four million, eight hundred fifty-six thousand, seven hundred twenty".