16836474121 has 2 divisors, whose sum is σ = 16836474122. Its totient is φ = 16836474120.

The previous prime is 16836474113. The next prime is 16836474131. The reversal of 16836474121 is 12147463861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9169020025 + 7667454096 = 95755^2 + 87564^2 .

It is a cyclic number.

It is not a de Polignac number, because 16836474121 - 2³ = 16836474113 is a prime.

It is not a weakly prime, because it can be changed into another prime (16836474131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8418237060 + 8418237061.

It is an arithmetic number, because the mean of its divisors is an integer number (8418237061).

Almost surely, 2^16836474121 is an apocalyptic number.

It is an amenable number.

16836474121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16836474121 is an equidigital number, since it uses as much as digits as its factorization.

16836474121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The spelling of 16836474121 in words is "sixteen billion, eight hundred thirty-six million, four hundred seventy-four thousand, one hundred twenty-one".