16645141402 has 4 divisors (see below), whose sum is σ = 24967712106. Its totient is φ = 8322570700.

The previous prime is 16645141399. The next prime is 16645141417. The reversal of 16645141402 is 20414154661.

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., 14754717961 + 1890423441 = 121469^2 + 43479^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4161285349 + ... + 4161285352.

Almost surely, 2^16645141402 is an apocalyptic number.

16645141402 is a deficient number, since it is larger than the sum of its proper divisors (8322570704).

16645141402 is an equidigital number, since it uses as much as digits as its factorization.

16645141402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8322570703.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 16645141402 in words is "sixteen billion, six hundred forty-five million, one hundred forty-one thousand, four hundred two".