2511638996 has 6 divisors (see below), whose sum is σ = 4395368250. Its totient is φ = 1255819496.

The previous prime is 2511638981. The next prime is 2511638999. The reversal of 2511638996 is 6998361152.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2174916496 + 336722500 = 46636^2 + 18350^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2511638999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313954871 + ... + 313954878.

It is an arithmetic number, because the mean of its divisors is an integer number (732561375).

Almost surely, 2^2511638996 is an apocalyptic number.

It is an amenable number.

2511638996 is a deficient number, since it is larger than the sum of its proper divisors (1883729254).

2511638996 is a wasteful number, since it uses less digits than its factorization.

2511638996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627909753 (or 627909751 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 2511638996 is about 50116.2548081957. The cubic root of 2511638996 is about 1359.3117545603.

The spelling of 2511638996 in words is "two billion, five hundred eleven million, six hundred thirty-eight thousand, nine hundred ninety-six".