515340664421 has 8 divisors (see below), whose sum is σ = 562195653888. Its totient is φ = 468486648000.

The previous prime is 515340664403. The next prime is 515340664471. The reversal of 515340664421 is 124466043515.

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 515340664421 - 2¹⁴ = 515340648037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515340664471) 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, 1277516 + ... + 1631786.

It is an arithmetic number, because the mean of its divisors is an integer number (70274456736).

Almost surely, 2^515340664421 is an apocalyptic number.

It is an amenable number.

515340664421 is a deficient number, since it is larger than the sum of its proper divisors (46854989467).

515340664421 is a wasteful number, since it uses less digits than its factorization.

515340664421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486523.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 515340664421 in words is "five hundred fifteen billion, three hundred forty million, six hundred sixty-four thousand, four hundred twenty-one".