7643616012 has 36 divisors (see below), whose sum is σ = 19422539136. Its totient is φ = 2534530080.

The previous prime is 7643616011. The next prime is 7643616017. The reversal of 7643616012 is 2106163467.

It is a happy number.

7643616012 is a `hidden beast` number, since 7 + 6 + 43 + 6 + 1 + 601 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7643616011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548943 + ... + 562694.

It is an arithmetic number, because the mean of its divisors is an integer number (539514976).

Almost surely, 2^7643616012 is an apocalyptic number.

It is an amenable number.

7643616012 is an abundant number, since it is smaller than the sum of its proper divisors (11778923124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7643616012 is a wasteful number, since it uses less digits than its factorization.

7643616012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111838 (or 1111833 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 7643616012 is about 87427.7759753730. The cubic root of 7643616012 is about 1969.8490794568.

Adding to 7643616012 its reverse (2106163467), we get a palindrome (9749779479).

The spelling of 7643616012 in words is "seven billion, six hundred forty-three million, six hundred sixteen thousand, twelve".