1561047760173 has 16 divisors (see below), whose sum is σ = 2270644681536. Its totient is φ = 946077152640.

The previous prime is 1561047760171. The next prime is 1561047760177. The reversal of 1561047760173 is 3710677401651.

It is not a de Polignac number, because 1561047760173 - 2¹ = 1561047760171 is a prime.

It is a super-2 number, since 2×1561047760173² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561047760171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2675311 + ... + 3206147.

It is an arithmetic number, because the mean of its divisors is an integer number (141915292596).

Almost surely, 2^{1561047760173} is an apocalyptic number.

It is an amenable number.

1561047760173 is a deficient number, since it is larger than the sum of its proper divisors (709596921363).

1561047760173 is a wasteful number, since it uses less digits than its factorization.

1561047760173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619964.

The product of its (nonzero) digits is 740880, while the sum is 48.

The spelling of 1561047760173 in words is "one trillion, five hundred sixty-one billion, forty-seven million, seven hundred sixty thousand, one hundred seventy-three".