17561057145 has 16 divisors (see below), whose sum is σ = 28141540992. Its totient is φ = 9351280640.

The previous prime is 17561057141. The next prime is 17561057191. The reversal of 17561057145 is 54175016571.

It is not a de Polignac number, because 17561057145 - 2² = 17561057141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17561057097 and 17561057106.

It is not an unprimeable number, because it can be changed into a prime (17561057141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 903597 + ... + 922826.

It is an arithmetic number, because the mean of its divisors is an integer number (1758846312).

Almost surely, 2^17561057145 is an apocalyptic number.

17561057145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17561057145 is a deficient number, since it is larger than the sum of its proper divisors (10580483847).

17561057145 is a wasteful number, since it uses less digits than its factorization.

17561057145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827072.

The product of its (nonzero) digits is 147000, while the sum is 42.

The spelling of 17561057145 in words is "seventeen billion, five hundred sixty-one million, fifty-seven thousand, one hundred forty-five".