207651212113 has 4 divisors (see below), whose sum is σ = 207654565888. Its totient is φ = 207647858340.

The previous prime is 207651212081. The next prime is 207651212117. The reversal of 207651212113 is 311212156702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311212156702 = 2 ⋅155606078351.

It is a cyclic number.

It is not a de Polignac number, because 207651212113 - 2⁵ = 207651212081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207651212117) 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, 1582233 + ... + 1708438.

It is an arithmetic number, because the mean of its divisors is an integer number (51913641472).

Almost surely, 2^207651212113 is an apocalyptic number.

It is an amenable number.

207651212113 is a deficient number, since it is larger than the sum of its proper divisors (3353775).

207651212113 is an equidigital number, since it uses as much as digits as its factorization.

207651212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353774.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 207651212113 its reverse (311212156702), we get a palindrome (518863368815).

The spelling of 207651212113 in words is "two hundred seven billion, six hundred fifty-one million, two hundred twelve thousand, one hundred thirteen".