8277628813 has 4 divisors (see below), whose sum is σ = 8413327708. Its totient is φ = 8141929920.

The previous prime is 8277628771. The next prime is 8277628817. The reversal of 8277628813 is 3188267728.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2452428484 + 5825200329 = 49522^2 + 76323^2 .

It is a cyclic number.

It is not a de Polignac number, because 8277628813 - 2¹³ = 8277620621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8277628817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67849356 + ... + 67849477.

It is an arithmetic number, because the mean of its divisors is an integer number (2103331927).

Almost surely, 2^8277628813 is an apocalyptic number.

It is an amenable number.

8277628813 is a deficient number, since it is larger than the sum of its proper divisors (135698895).

8277628813 is a wasteful number, since it uses less digits than its factorization.

8277628813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135698894.

The product of its digits is 1806336, while the sum is 52.

The square root of 8277628813 is about 90981.4751089473. The cubic root of 8277628813 is about 2022.8731467626.

The spelling of 8277628813 in words is "eight billion, two hundred seventy-seven million, six hundred twenty-eight thousand, eight hundred thirteen".