21429163670 has 8 divisors (see below), whose sum is σ = 38572494624. Its totient is φ = 8571665464.

The previous prime is 21429163669. The next prime is 21429163703. The reversal of 21429163670 is 7636192412.

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

It is a super-3 number, since 3×21429163670³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1071458174 + ... + 1071458193.

It is an arithmetic number, because the mean of its divisors is an integer number (4821561828).

Almost surely, 2^21429163670 is an apocalyptic number.

21429163670 is a deficient number, since it is larger than the sum of its proper divisors (17143330954).

21429163670 is a wasteful number, since it uses less digits than its factorization.

21429163670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142916374.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 21429163670 in words is "twenty-one billion, four hundred twenty-nine million, one hundred sixty-three thousand, six hundred seventy".