1616442137645 has 32 divisors (see below), whose sum is σ = 1957548902400. Its totient is φ = 1281335328000.

The previous prime is 1616442137623. The next prime is 1616442137663. The reversal of 1616442137645 is 5467312446161.

It is not a de Polignac number, because 1616442137645 - 2⁶ = 1616442137581 is a prime.

It is a super-3 number, since 3×1616442137645³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1616442137593 and 1616442137602.

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 31 ways as a sum of consecutive naturals, for example, 355337831 + ... + 355342379.

It is an arithmetic number, because the mean of its divisors is an integer number (61173403200).

Almost surely, 2^{1616442137645} is an apocalyptic number.

It is an amenable number.

1616442137645 is a deficient number, since it is larger than the sum of its proper divisors (341106764755).

1616442137645 is a wasteful number, since it uses less digits than its factorization.

1616442137645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077.

The product of its digits is 2903040, while the sum is 50.

The spelling of 1616442137645 in words is "one trillion, six hundred sixteen billion, four hundred forty-two million, one hundred thirty-seven thousand, six hundred forty-five".