161570560603 has 4 divisors (see below), whose sum is σ = 161586057528. Its totient is φ = 161555063680.

The previous prime is 161570560601. The next prime is 161570560631. The reversal of 161570560603 is 306065075161.

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

It is a cyclic number.

It is not a de Polignac number, because 161570560603 - 2¹ = 161570560601 is a prime.

It is a super-2 number, since 2×161570560603² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161570560601) 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, 7732813 + ... + 7753678.

It is an arithmetic number, because the mean of its divisors is an integer number (40396514382).

Almost surely, 2^161570560603 is an apocalyptic number.

161570560603 is a deficient number, since it is larger than the sum of its proper divisors (15496925).

161570560603 is a wasteful number, since it uses less digits than its factorization.

161570560603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15496924.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 161570560603 in words is "one hundred sixty-one billion, five hundred seventy million, five hundred sixty thousand, six hundred three".