10878400840 has 32 divisors (see below), whose sum is σ = 24877659960. Its totient is φ = 4280025600.

The previous prime is 10878400829. The next prime is 10878400843. The reversal of 10878400840 is 4800487801.

It can be written as a sum of positive squares in 4 ways, for example, as 2680547076 + 8197853764 = 51774^2 + 90542^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 10878400793 and 10878400802.

It is not an unprimeable number, because it can be changed into a prime (10878400843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226741 + ... + 2231620.

Almost surely, 2^10878400840 is an apocalyptic number.

10878400840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10878400840 is an abundant number, since it is smaller than the sum of its proper divisors (13999259120).

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

10878400840 is a wasteful number, since it uses less digits than its factorization.

10878400840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458433 (or 4458429 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The spelling of 10878400840 in words is "ten billion, eight hundred seventy-eight million, four hundred thousand, eight hundred forty".