2139556515 has 8 divisors (see below), whose sum is σ = 3423290448. Its totient is φ = 1141096800.

The previous prime is 2139556499. The next prime is 2139556571. The reversal of 2139556515 is 5156559312.

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

It is not a de Polignac number, because 2139556515 - 2⁴ = 2139556499 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71318536 + ... + 71318565.

It is an arithmetic number, because the mean of its divisors is an integer number (427911306).

Almost surely, 2^2139556515 is an apocalyptic number.

2139556515 is a deficient number, since it is larger than the sum of its proper divisors (1283733933).

2139556515 is a wasteful number, since it uses less digits than its factorization.

2139556515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142637109.

The product of its digits is 202500, while the sum is 42.

The square root of 2139556515 is about 46255.3403943804. The cubic root of 2139556515 is about 1288.5697175724.

The spelling of 2139556515 in words is "two billion, one hundred thirty-nine million, five hundred fifty-six thousand, five hundred fifteen".