10909291820 has 48 divisors (see below), whose sum is σ = 26214162240. Its totient is φ = 3735777024.

The previous prime is 10909291819. The next prime is 10909291831. The reversal of 10909291820 is 2819290901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69062 + ... + 163058.

It is an arithmetic number, because the mean of its divisors is an integer number (546128380).

Almost surely, 2^10909291820 is an apocalyptic number.

10909291820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10909291820 is an abundant number, since it is smaller than the sum of its proper divisors (15304870420).

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

10909291820 is a wasteful number, since it uses less digits than its factorization.

10909291820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94842 (or 94840 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 10909291820 in words is "ten billion, nine hundred nine million, two hundred ninety-one thousand, eight hundred twenty".