16531253830 has 96 divisors (see below), whose sum is σ = 37184569344. Its totient is φ = 5180692608.

The previous prime is 16531253813. The next prime is 16531253861. The reversal of 16531253830 is 3835213561.

It is a self number, because there is not a number n which added to its sum of digits gives 16531253830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1211707 + ... + 1225273.

It is an arithmetic number, because the mean of its divisors is an integer number (387339264).

Almost surely, 2^16531253830 is an apocalyptic number.

16531253830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16531253830 is an abundant number, since it is smaller than the sum of its proper divisors (20653315514).

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

16531253830 is a wasteful number, since it uses less digits than its factorization.

16531253830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13710 (or 13697 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 16531253830 in words is "sixteen billion, five hundred thirty-one million, two hundred fifty-three thousand, eight hundred thirty".