160491033661 has 4 divisors (see below), whose sum is σ = 183418324192. Its totient is φ = 137563743132.

The previous prime is 160491033653. The next prime is 160491033673. The reversal of 160491033661 is 166330194061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 160491033661 - 2³ = 160491033653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160491031661) 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, 11463645255 + ... + 11463645268.

It is an arithmetic number, because the mean of its divisors is an integer number (45854581048).

Almost surely, 2^160491033661 is an apocalyptic number.

It is an amenable number.

160491033661 is a deficient number, since it is larger than the sum of its proper divisors (22927290531).

160491033661 is an equidigital number, since it uses as much as digits as its factorization.

160491033661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22927290530.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 160491033661 in words is "one hundred sixty billion, four hundred ninety-one million, thirty-three thousand, six hundred sixty-one".