1561134934689 has 48 divisors (see below), whose sum is σ = 2388592905216. Its totient is φ = 904561210080.

The previous prime is 1561134934679. The next prime is 1561134934693. The reversal of 1561134934689 is 9864394311651.

It is a happy number.

It is not a de Polignac number, because 1561134934689 - 2⁸ = 1561134934433 is a prime.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1561134934649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17346084 + ... + 17435850.

It is an arithmetic number, because the mean of its divisors is an integer number (49762352192).

Almost surely, 2^{1561134934689} is an apocalyptic number.

It is an amenable number.

1561134934689 is a deficient number, since it is larger than the sum of its proper divisors (827457970527).

1561134934689 is a wasteful number, since it uses less digits than its factorization.

1561134934689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91898 (or 91887 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 60.

The spelling of 1561134934689 in words is "one trillion, five hundred sixty-one billion, one hundred thirty-four million, nine hundred thirty-four thousand, six hundred eighty-nine".