7212770513 has 8 divisors (see below), whose sum is σ = 7781964456. Its totient is φ = 6645628800.

The previous prime is 7212770459. The next prime is 7212770533. The reversal of 7212770513 is 3150772127.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 7212765184 = 73^2 + 84928^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7212770513 - 2⁶ = 7212770449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7212770533) 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 7 ways as a sum of consecutive naturals, for example, 505748 + ... + 519813.

It is an arithmetic number, because the mean of its divisors is an integer number (972745557).

Almost surely, 2^7212770513 is an apocalyptic number.

It is an amenable number.

7212770513 is a deficient number, since it is larger than the sum of its proper divisors (569193943).

7212770513 is a wasteful number, since it uses less digits than its factorization.

7212770513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026115.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 7212770513 is about 84928.0313736283. The cubic root of 7212770513 is about 1932.1197425630.

The spelling of 7212770513 in words is "seven billion, two hundred twelve million, seven hundred seventy thousand, five hundred thirteen".