7716371644 has 6 divisors (see below), whose sum is σ = 13503650384. Its totient is φ = 3858185820.

The previous prime is 7716371617. The next prime is 7716371647. The reversal of 7716371644 is 4461736177.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7716371594 and 7716371603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7716371647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964546452 + ... + 964546459.

Almost surely, 2^7716371644 is an apocalyptic number.

It is an amenable number.

7716371644 is a deficient number, since it is larger than the sum of its proper divisors (5787278740).

7716371644 is a wasteful number, since it uses less digits than its factorization.

7716371644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929092915 (or 1929092913 counting only the distinct ones).

The product of its digits is 592704, while the sum is 46.

The square root of 7716371644 is about 87842.8804400220. The cubic root of 7716371644 is about 1976.0793454209.

The spelling of 7716371644 in words is "seven billion, seven hundred sixteen million, three hundred seventy-one thousand, six hundred forty-four".