7745311664 has 20 divisors (see below), whose sum is σ = 15187345656. Its totient is φ = 3825996672.

The previous prime is 7745311657. The next prime is 7745311669. The reversal of 7745311664 is 4661135477.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7745311669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2914829 + ... + 2917484.

Almost surely, 2^7745311664 is an apocalyptic number.

It is an amenable number.

7745311664 is a deficient number, since it is larger than the sum of its proper divisors (7442033992).

7745311664 is a wasteful number, since it uses less digits than its factorization.

7745311664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832404 (or 5832398 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 7745311664 is about 88007.4523208120. The cubic root of 7745311664 is about 1978.5466721788.

The spelling of 7745311664 in words is "seven billion, seven hundred forty-five million, three hundred eleven thousand, six hundred sixty-four".