16504143650 has 24 divisors (see below), whose sum is σ = 30704056020. Its totient is φ = 6600292160.

The previous prime is 16504143637. The next prime is 16504143653. The reversal of 16504143650 is 5634140561.

It can be written as a sum of positive squares in 6 ways, for example, as 13656960769 + 2847182881 = 116863^2 + 53359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16504143650.

It is not an unprimeable number, because it can be changed into a prime (16504143653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230336 + ... + 293364.

Almost surely, 2^16504143650 is an apocalyptic number.

16504143650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16504143650 is a deficient number, since it is larger than the sum of its proper divisors (14199912370).

16504143650 is a wasteful number, since it uses less digits than its factorization.

16504143650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68278 (or 68273 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 16504143650 in words is "sixteen billion, five hundred four million, one hundred forty-three thousand, six hundred fifty".