5121447007721 has 8 divisors (see below), whose sum is σ = 5767259973888. Its totient is φ = 4505671854000.

The previous prime is 5121447007697. The next prime is 5121447007727. The reversal of 5121447007721 is 1277007441215.

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 5121447007721 - 2¹⁸ = 5121446745577 is a prime.

It is a super-2 number, since 2×5121447007721² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5121447007727) 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, 7509452750 + ... + 7509453431.

It is an arithmetic number, because the mean of its divisors is an integer number (720907496736).

Almost surely, 2^{5121447007721} is an apocalyptic number.

It is an amenable number.

5121447007721 is a deficient number, since it is larger than the sum of its proper divisors (645812966167).

5121447007721 is a wasteful number, since it uses less digits than its factorization.

5121447007721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15018906223.

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 5121447007721 in words is "five trillion, one hundred twenty-one billion, four hundred forty-seven million, seven thousand, seven hundred twenty-one".