7138720011 has 24 divisors (see below), whose sum is σ = 9871495920. Its totient is φ = 4588670464.

The previous prime is 7138720003. The next prime is 7138720027. The reversal of 7138720011 is 1100278317.

It is not a de Polignac number, because 7138720011 - 2³ = 7138720003 is a prime.

It is a super-2 number, since 2×7138720011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7138720031) 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 23 ways as a sum of consecutive naturals, for example, 2402935 + ... + 2405903.

It is an arithmetic number, because the mean of its divisors is an integer number (411312330).

Almost surely, 2^7138720011 is an apocalyptic number.

7138720011 is a deficient number, since it is larger than the sum of its proper divisors (2732775909).

7138720011 is a wasteful number, since it uses less digits than its factorization.

7138720011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983 (or 3954 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 7138720011 is about 84490.9463256271. The cubic root of 7138720011 is about 1925.4848959842.

Adding to 7138720011 its reverse (1100278317), we get a palindrome (8238998328).

The spelling of 7138720011 in words is "seven billion, one hundred thirty-eight million, seven hundred twenty thousand, eleven".