1616431646002 has 4 divisors (see below), whose sum is σ = 2424647469006. Its totient is φ = 808215823000.

The previous prime is 1616431645949. The next prime is 1616431646003. The reversal of 1616431646002 is 2006461346161.

It is a happy number.

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., 1513468313361 + 102963332641 = 1230231^2 + 320879^2 .

It is a super-2 number, since 2×1616431646002² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1616431646003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404107911499 + ... + 404107911502.

Almost surely, 2^{1616431646002} is an apocalyptic number.

1616431646002 is a deficient number, since it is larger than the sum of its proper divisors (808215823004).

1616431646002 is an equidigital number, since it uses as much as digits as its factorization.

1616431646002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808215823003.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 1616431646002 in words is "one trillion, six hundred sixteen billion, four hundred thirty-one million, six hundred forty-six thousand, two".