21451146335 has 4 divisors (see below), whose sum is σ = 25741375608. Its totient is φ = 17160917064.

The previous prime is 21451146323. The next prime is 21451146349. The reversal of 21451146335 is 53364115412.

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 21451146335 - 2¹⁴ = 21451129951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21451146295 and 21451146304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145114629 + ... + 2145114638.

It is an arithmetic number, because the mean of its divisors is an integer number (6435343902).

Almost surely, 2^21451146335 is an apocalyptic number.

21451146335 is a deficient number, since it is larger than the sum of its proper divisors (4290229273).

21451146335 is an equidigital number, since it uses as much as digits as its factorization.

21451146335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290229272.

The product of its digits is 43200, while the sum is 35.

The spelling of 21451146335 in words is "twenty-one billion, four hundred fifty-one million, one hundred forty-six thousand, three hundred thirty-five".