160661011559 has 4 divisors (see below), whose sum is σ = 161724991920. Its totient is φ = 159597031200.

The previous prime is 160661011541. The next prime is 160661011601. The reversal of 160661011559 is 955110166061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955110166061 = 43 ⋅22211864327.

It is a cyclic number.

It is not a de Polignac number, because 160661011559 - 2¹⁶ = 160660946023 is a prime.

It is a super-2 number, since 2×160661011559² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160661001559) 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, 531989954 + ... + 531990255.

It is an arithmetic number, because the mean of its divisors is an integer number (40431247980).

Almost surely, 2^160661011559 is an apocalyptic number.

160661011559 is a deficient number, since it is larger than the sum of its proper divisors (1063980361).

160661011559 is a wasteful number, since it uses less digits than its factorization.

160661011559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063980360.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 160661011559 in words is "one hundred sixty billion, six hundred sixty-one million, eleven thousand, five hundred fifty-nine".