7621495812 has 72 divisors (see below), whose sum is σ = 22129563456. Its totient is φ = 2166502464.

The previous prime is 7621495807. The next prime is 7621495813. The reversal of 7621495812 is 2185941267.

7621495812 is a `hidden beast` number, since 7 + 6 + 21 + 49 + 581 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (7621495813) 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, 27118 + ... + 126405.

It is an arithmetic number, because the mean of its divisors is an integer number (307355048).

Almost surely, 2^7621495812 is an apocalyptic number.

It is an amenable number.

7621495812 is an abundant number, since it is smaller than the sum of its proper divisors (14508067644).

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

7621495812 is a wasteful number, since it uses less digits than its factorization.

7621495812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153737 (or 153732 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 7621495812 is about 87301.1787549286. The cubic root of 7621495812 is about 1967.9470322101.

The spelling of 7621495812 in words is "seven billion, six hundred twenty-one million, four hundred ninety-five thousand, eight hundred twelve".