16516265654 has 32 divisors (see below), whose sum is σ = 29381184000. Its totient is φ = 6958409640.

The previous prime is 16516265639. The next prime is 16516265671. The reversal of 16516265654 is 45656261561.

It is a junction number, because it is equal to n+sod(n) for n = 16516265599 and 16516265608.

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 15 ways as a sum of consecutive naturals, for example, 163562 + ... + 244509.

It is an arithmetic number, because the mean of its divisors is an integer number (918162000).

Almost surely, 2^16516265654 is an apocalyptic number.

16516265654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16516265654 is a deficient number, since it is larger than the sum of its proper divisors (12864918346).

16516265654 is an equidigital number, since it uses as much as digits as its factorization.

16516265654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408153 (or 408139 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 47.

The spelling of 16516265654 in words is "sixteen billion, five hundred sixteen million, two hundred sixty-five thousand, six hundred fifty-four".