1605616100516 has 6 divisors (see below), whose sum is σ = 2809828175910. Its totient is φ = 802808050256.

The previous prime is 1605616100513. The next prime is 1605616100533. The reversal of 1605616100516 is 6150016165061.

It can be written as a sum of positive squares in only one way, i.e., 1601606678116 + 4009422400 = 1265546^2 + 63320^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1605616100516.

It is not an unprimeable number, because it can be changed into a prime (1605616100513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200702012561 + ... + 200702012568.

It is an arithmetic number, because the mean of its divisors is an integer number (468304695985).

Almost surely, 2^{1605616100516} is an apocalyptic number.

It is an amenable number.

1605616100516 is a deficient number, since it is larger than the sum of its proper divisors (1204212075394).

1605616100516 is a wasteful number, since it uses less digits than its factorization.

1605616100516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401404025133 (or 401404025131 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 1605616100516 in words is "one trillion, six hundred five billion, six hundred sixteen million, one hundred thousand, five hundred sixteen".