2516651139 has 4 divisors (see below), whose sum is σ = 3355534856. Its totient is φ = 1677767424.

The previous prime is 2516651047. The next prime is 2516651149. The reversal of 2516651139 is 9311566152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2516651139 - 2⁹ = 2516650627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2516651097 and 2516651106.

It is not an unprimeable number, because it can be changed into a prime (2516651149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419441854 + ... + 419441859.

It is an arithmetic number, because the mean of its divisors is an integer number (838883714).

Almost surely, 2^2516651139 is an apocalyptic number.

2516651139 is a deficient number, since it is larger than the sum of its proper divisors (838883717).

2516651139 is an equidigital number, since it uses as much as digits as its factorization.

2516651139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838883716.

The product of its digits is 48600, while the sum is 39.

The square root of 2516651139 is about 50166.2350490846. The cubic root of 2516651139 is about 1360.2153528281.

The spelling of 2516651139 in words is "two billion, five hundred sixteen million, six hundred fifty-one thousand, one hundred thirty-nine".