2621136772 has 12 divisors (see below), whose sum is σ = 4856812380. Its totient is φ = 1233476096.

The previous prime is 2621136751. The next prime is 2621136779. The reversal of 2621136772 is 2776311262.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2251882116 + 369254656 = 47454^2 + 19216^2 .

It is not an unprimeable number, because it can be changed into a prime (2621136779) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19272997 + ... + 19273132.

It is an arithmetic number, because the mean of its divisors is an integer number (404734365).

Almost surely, 2^2621136772 is an apocalyptic number.

It is an amenable number.

2621136772 is a deficient number, since it is larger than the sum of its proper divisors (2235675608).

2621136772 is a wasteful number, since it uses less digits than its factorization.

2621136772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38546150 (or 38546148 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 2621136772 is about 51197.0387034250. The cubic root of 2621136772 is about 1378.7850351073.

The spelling of 2621136772 in words is "two billion, six hundred twenty-one million, one hundred thirty-six thousand, seven hundred seventy-two".