16531870654 has 16 divisors (see below), whose sum is σ = 26742502080. Its totient is φ = 7619473440.

The previous prime is 16531870591. The next prime is 16531870669. The reversal of 16531870654 is 45607813561.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 423477 + ... + 460864.

It is an arithmetic number, because the mean of its divisors is an integer number (1671406380).

Almost surely, 2^16531870654 is an apocalyptic number.

16531870654 is a deficient number, since it is larger than the sum of its proper divisors (10210631426).

16531870654 is a wasteful number, since it uses less digits than its factorization.

16531870654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885075.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 16531870654 in words is "sixteen billion, five hundred thirty-one million, eight hundred seventy thousand, six hundred fifty-four".