5215516014421 has 8 divisors (see below), whose sum is σ = 5220865292760. Its totient is φ = 5210167133952.

The previous prime is 5215516014377. The next prime is 5215516014431. The reversal of 5215516014421 is 1244106155125.

It can be written as a sum of positive squares in 4 ways, for example, as 86310213796 + 5129205800625 = 293786^2 + 2264775^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5215516014421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215516014431) 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, 31125961 + ... + 31293073.

It is an arithmetic number, because the mean of its divisors is an integer number (652608161595).

Almost surely, 2^{5215516014421} is an apocalyptic number.

It is an amenable number.

5215516014421 is a deficient number, since it is larger than the sum of its proper divisors (5349278339).

5215516014421 is a wasteful number, since it uses less digits than its factorization.

5215516014421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198935.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 5215516014421 in words is "five trillion, two hundred fifteen billion, five hundred sixteen million, fourteen thousand, four hundred twenty-one".