1561041574156 has 12 divisors (see below), whose sum is σ = 2738635283160. Its totient is φ = 778574350400.

The previous prime is 1561041574129. The next prime is 1561041574163. The reversal of 1561041574156 is 6514751401651.

It is a super-2 number, since 2×1561041574156² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486607366 + ... + 486610573.

It is an arithmetic number, because the mean of its divisors is an integer number (228219606930).

Almost surely, 2^{1561041574156} is an apocalyptic number.

It is an amenable number.

1561041574156 is a deficient number, since it is larger than the sum of its proper divisors (1177593709004).

1561041574156 is a wasteful number, since it uses less digits than its factorization.

1561041574156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973218344 (or 973218342 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 1561041574156 in words is "one trillion, five hundred sixty-one billion, forty-one million, five hundred seventy-four thousand, one hundred fifty-six".