1560061561117 has 4 divisors (see below), whose sum is σ = 1564531651900. Its totient is φ = 1555591470336.

The previous prime is 1560061561087. The next prime is 1560061561129. The reversal of 1560061561117 is 7111651600651.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1388412099481 + 171649461636 = 1178309^2 + 414306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1560061561117 is a prime.

It is a super-2 number, since 2×1560061561117² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1560061561117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1560061561187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2235044868 + ... + 2235045565.

It is an arithmetic number, because the mean of its divisors is an integer number (391132912975).

Almost surely, 2^{1560061561117} is an apocalyptic number.

It is an amenable number.

1560061561117 is a deficient number, since it is larger than the sum of its proper divisors (4470090783).

1560061561117 is an equidigital number, since it uses as much as digits as its factorization.

1560061561117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470090782.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 1560061561117 in words is "one trillion, five hundred sixty billion, sixty-one million, five hundred sixty-one thousand, one hundred seventeen".