7072780813 has 8 divisors (see below), whose sum is σ = 8086514432. Its totient is φ = 6059881296.

The previous prime is 7072780733. The next prime is 7072780829. The reversal of 7072780813 is 3180872707.

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

It is not a de Polignac number, because 7072780813 - 2²⁹ = 6535909901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7072780813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7072780513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190245 + ... + 224362.

It is an arithmetic number, because the mean of its divisors is an integer number (1010814304).

Almost surely, 2^7072780813 is an apocalyptic number.

It is an amenable number.

7072780813 is a deficient number, since it is larger than the sum of its proper divisors (1013733619).

7072780813 is a wasteful number, since it uses less digits than its factorization.

7072780813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417051.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 7072780813 is about 84099.8264742562. The cubic root of 7072780813 is about 1919.5380845008.

The spelling of 7072780813 in words is "seven billion, seventy-two million, seven hundred eighty thousand, eight hundred thirteen".