160661604451 has 2 divisors, whose sum is σ = 160661604452. Its totient is φ = 160661604450.

The previous prime is 160661604413. The next prime is 160661604457. The reversal of 160661604451 is 154406166061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 160661604451 - 2⁹ = 160661603939 is a prime.

It is a super-2 number, since 2×160661604451² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (160661604457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80330802225 + 80330802226.

It is an arithmetic number, because the mean of its divisors is an integer number (80330802226).

Almost surely, 2^160661604451 is an apocalyptic number.

160661604451 is a deficient number, since it is larger than the sum of its proper divisors (1).

160661604451 is an equidigital number, since it uses as much as digits as its factorization.

160661604451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 160661604451 in words is "one hundred sixty billion, six hundred sixty-one million, six hundred four thousand, four hundred fifty-one".