2616438521 has 8 divisors (see below), whose sum is σ = 2657270784. Its totient is φ = 2575889280.

The previous prime is 2616438511. The next prime is 2616438523. The reversal of 2616438521 is 1258346162.

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-2616438521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2616438523) 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, 52085 + ... + 89138.

It is an arithmetic number, because the mean of its divisors is an integer number (332158848).

Almost surely, 2^2616438521 is an apocalyptic number.

It is an amenable number.

2616438521 is a deficient number, since it is larger than the sum of its proper divisors (40832263).

2616438521 is a wasteful number, since it uses less digits than its factorization.

2616438521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141511.

The product of its digits is 69120, while the sum is 38.

The square root of 2616438521 is about 51151.1341125493. The cubic root of 2616438521 is about 1377.9607423148.

The spelling of 2616438521 in words is "two billion, six hundred sixteen million, four hundred thirty-eight thousand, five hundred twenty-one".