7611868644 has 48 divisors (see below), whose sum is σ = 18164084736. Its totient is φ = 2479860000.

The previous prime is 7611868601. The next prime is 7611868721. The reversal of 7611868644 is 4468681167.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414579 + ... + 432549.

It is an arithmetic number, because the mean of its divisors is an integer number (378418432).

Almost surely, 2^7611868644 is an apocalyptic number.

It is an amenable number.

7611868644 is an abundant number, since it is smaller than the sum of its proper divisors (10552216092).

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

7611868644 is a wasteful number, since it uses less digits than its factorization.

7611868644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18776 (or 18774 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 7611868644 is about 87246.0236572418. The cubic root of 7611868644 is about 1967.1180724741.

The spelling of 7611868644 in words is "seven billion, six hundred eleven million, eight hundred sixty-eight thousand, six hundred forty-four".