16197210045 has 24 divisors (see below), whose sum is σ = 28145208312. Its totient is φ = 8616960000.

The previous prime is 16197210019. The next prime is 16197210083. The reversal of 16197210045 is 54001279161.

It can be written as a sum of positive squares in 4 ways, for example, as 6367082436 + 9830127609 = 79794^2 + 99147^2 .

It is not a de Polignac number, because 16197210045 - 2⁸ = 16197209789 is a prime.

It is a super-2 number, since 2×16197210045² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16197209991 and 16197210009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430756 + ... + 466845.

It is an arithmetic number, because the mean of its divisors is an integer number (1172717013).

Almost surely, 2^16197210045 is an apocalyptic number.

16197210045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16197210045 is a deficient number, since it is larger than the sum of its proper divisors (11947998267).

16197210045 is a wasteful number, since it uses less digits than its factorization.

16197210045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898013 (or 898010 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 16197210045 in words is "sixteen billion, one hundred ninety-seven million, two hundred ten thousand, forty-five".