21320060336651 has 8 divisors (see below), whose sum is σ = 21340463256000. Its totient is φ = 21299667068160.

The previous prime is 21320060336623. The next prime is 21320060336713. The reversal of 21320060336651 is 15663306002312.

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 21320060336651 - 2²² = 21320056142347 is a prime.

It is a super-3 number, since 3×21320060336651³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320060336621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2011550 + ... + 6832748.

It is an arithmetic number, because the mean of its divisors is an integer number (2667557907000).

Almost surely, 2^{21320060336651} is an apocalyptic number.

21320060336651 is a deficient number, since it is larger than the sum of its proper divisors (20402919349).

21320060336651 is a wasteful number, since it uses less digits than its factorization.

21320060336651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825429.

The product of its (nonzero) digits is 116640, while the sum is 38.

Adding to 21320060336651 its reverse (15663306002312), we get a palindrome (36983366338963).

The spelling of 21320060336651 in words is "twenty-one trillion, three hundred twenty billion, sixty million, three hundred thirty-six thousand, six hundred fifty-one".