21629041279 has 8 divisors (see below), whose sum is σ = 22556928128. Its totient is φ = 20715540480.

The previous prime is 21629041211. The next prime is 21629041289. The reversal of 21629041279 is 97214092612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21629041279 - 2¹³ = 21629033087 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 (21629041289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3593442 + ... + 3599455.

It is an arithmetic number, because the mean of its divisors is an integer number (2819616016).

Almost surely, 2^21629041279 is an apocalyptic number.

21629041279 is a deficient number, since it is larger than the sum of its proper divisors (927886849).

21629041279 is an equidigital number, since it uses as much as digits as its factorization.

21629041279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193025.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 21629041279 in words is "twenty-one billion, six hundred twenty-nine million, forty-one thousand, two hundred seventy-nine".