21570710619 has 8 divisors (see below), whose sum is σ = 29429806912. Its totient is φ = 14046044040.

The previous prime is 21570710617. The next prime is 21570710633. The reversal of 21570710619 is 91601707512.

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

It is not a de Polignac number, because 21570710619 - 2¹ = 21570710617 is a prime.

It is a super-2 number, since 2×21570710619² (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 (21570710611) 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, 83607277 + ... + 83607534.

It is an arithmetic number, because the mean of its divisors is an integer number (3678725864).

Almost surely, 2^21570710619 is an apocalyptic number.

21570710619 is a deficient number, since it is larger than the sum of its proper divisors (7859096293).

21570710619 is a wasteful number, since it uses less digits than its factorization.

21570710619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167214857.

The product of its (nonzero) digits is 26460, while the sum is 39.

The spelling of 21570710619 in words is "twenty-one billion, five hundred seventy million, seven hundred ten thousand, six hundred nineteen".