21329962045 has 16 divisors (see below), whose sum is σ = 29255967360. Its totient is φ = 14624535744.

The previous prime is 21329961997. The next prime is 21329962091. The reversal of 21329962045 is 54026992312.

It is not a de Polignac number, because 21329962045 - 2³¹ = 19182478397 is a prime.

It is a super-4 number, since 4×21329962045⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21329961992 and 21329962010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313014 + ... + 375016.

It is an arithmetic number, because the mean of its divisors is an integer number (1828497960).

Almost surely, 2^21329962045 is an apocalyptic number.

It is an amenable number.

21329962045 is a deficient number, since it is larger than the sum of its proper divisors (7926005315).

21329962045 is an equidigital number, since it uses as much as digits as its factorization.

21329962045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71844.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 21329962045 in words is "twenty-one billion, three hundred twenty-nine million, nine hundred sixty-two thousand, forty-five".