1561106051516 has 24 divisors (see below), whose sum is σ = 2980490297904. Its totient is φ = 709546772480.

The previous prime is 1561106051509. The next prime is 1561106051521. The reversal of 1561106051516 is 6151506011651.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1561106051516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494315 + ... + 1834818.

It is an arithmetic number, because the mean of its divisors is an integer number (124187095746).

Almost surely, 2^{1561106051516} is an apocalyptic number.

It is an amenable number.

1561106051516 is a deficient number, since it is larger than the sum of its proper divisors (1419384246388).

1561106051516 is a wasteful number, since it uses less digits than its factorization.

1561106051516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344381 (or 2344379 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1561106051516 in words is "one trillion, five hundred sixty-one billion, one hundred six million, fifty-one thousand, five hundred sixteen".