21611500005070 has 8 divisors (see below), whose sum is σ = 38900700009144. Its totient is φ = 8644600002024.

The previous prime is 21611500005041. The next prime is 21611500005083. The reversal of 21611500005070 is 7050000511612.

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

It is a super-2 number, since 2×21611500005070² (a number of 27 digits) contains 22 as substring.

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, 1080575000244 + ... + 1080575000263.

It is an arithmetic number, because the mean of its divisors is an integer number (4862587501143).

Almost surely, 2^{21611500005070} is an apocalyptic number.

21611500005070 is a deficient number, since it is larger than the sum of its proper divisors (17289200004074).

21611500005070 is a wasteful number, since it uses less digits than its factorization.

21611500005070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161150000514.

The product of its (nonzero) digits is 2100, while the sum is 28.

Adding to 21611500005070 its reverse (7050000511612), we get a palindrome (28661500516682).

The spelling of 21611500005070 in words is "twenty-one trillion, six hundred eleven billion, five hundred million, five thousand, seventy".