21466162353 has 4 divisors (see below), whose sum is σ = 28621549808. Its totient is φ = 14310774900.

The previous prime is 21466162349. The next prime is 21466162391. The reversal of 21466162353 is 35326166412.

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 not a de Polignac number, because 21466162353 - 2² = 21466162349 is a prime.

It is a super-2 number, since 2×21466162353² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21466162153) 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, 3577693723 + ... + 3577693728.

It is an arithmetic number, because the mean of its divisors is an integer number (7155387452).

Almost surely, 2^21466162353 is an apocalyptic number.

It is an amenable number.

21466162353 is a deficient number, since it is larger than the sum of its proper divisors (7155387455).

21466162353 is an equidigital number, since it uses as much as digits as its factorization.

21466162353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7155387454.

The product of its digits is 155520, while the sum is 39.

The spelling of 21466162353 in words is "twenty-one billion, four hundred sixty-six million, one hundred sixty-two thousand, three hundred fifty-three".