16135645346 has 4 divisors (see below), whose sum is σ = 24203468022. Its totient is φ = 8067822672.

The previous prime is 16135645343. The next prime is 16135645363. The reversal of 16135645346 is 64354653161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15131706121 + 1003939225 = 123011^2 + 31685^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16135645297 and 16135645306.

It is not an unprimeable number, because it can be changed into a prime (16135645343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4033911335 + ... + 4033911338.

Almost surely, 2^16135645346 is an apocalyptic number.

16135645346 is a deficient number, since it is larger than the sum of its proper divisors (8067822676).

16135645346 is an equidigital number, since it uses as much as digits as its factorization.

16135645346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067822675.

The product of its digits is 777600, while the sum is 44.

The spelling of 16135645346 in words is "sixteen billion, one hundred thirty-five million, six hundred forty-five thousand, three hundred forty-six".