21160466160551 has 4 divisors (see below), whose sum is σ = 21160491086352. Its totient is φ = 21160441234752.

The previous prime is 21160466160517. The next prime is 21160466160577. The reversal of 21160466160551 is 15506166406112.

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 21160466160551 - 2⁶ = 21160466160487 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 (21160466160511) 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, 11142890 + ... + 12902903.

It is an arithmetic number, because the mean of its divisors is an integer number (5290122771588).

Almost surely, 2^{21160466160551} is an apocalyptic number.

21160466160551 is a deficient number, since it is larger than the sum of its proper divisors (24925801).

21160466160551 is an equidigital number, since it uses as much as digits as its factorization.

21160466160551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24925800.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 21160466160551 in words is "twenty-one trillion, one hundred sixty billion, four hundred sixty-six million, one hundred sixty thousand, five hundred fifty-one".