10851990280 has 32 divisors (see below), whose sum is σ = 24817262040. Its totient is φ = 4269634560.

The previous prime is 10851990229. The next prime is 10851990313. The reversal of 10851990280 is 8209915801.

It can be written as a sum of positive squares in 4 ways, for example, as 4057944804 + 6794045476 = 63702^2 + 82426^2 .

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, 2221329 + ... + 2226208.

Almost surely, 2^10851990280 is an apocalyptic number.

10851990280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10851990280 is an abundant number, since it is smaller than the sum of its proper divisors (13965271760).

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

10851990280 is a wasteful number, since it uses less digits than its factorization.

10851990280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447609 (or 4447605 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 10851990280 in words is "ten billion, eight hundred fifty-one million, nine hundred ninety thousand, two hundred eighty".