4145694664 has 128 divisors (see below), whose sum is σ = 8981280000. Its totient is φ = 1781637120.

The previous prime is 4145694661. The next prime is 4145694691. The reversal of 4145694664 is 4664965414.

It is not an unprimeable number, because it can be changed into a prime (4145694661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11547717 + ... + 11548075.

It is an arithmetic number, because the mean of its divisors is an integer number (70166250).

Almost surely, 2^4145694664 is an apocalyptic number.

It is an amenable number.

4145694664 is an abundant number, since it is smaller than the sum of its proper divisors (4835585336).

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

4145694664 is a wasteful number, since it uses less digits than its factorization.

4145694664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 547 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 49.

The square root of 4145694664 is about 64387.0690744656. The cubic root of 4145694664 is about 1606.4446659475. Note that the first 3 decimals are identical.

The spelling of 4145694664 in words is "four billion, one hundred forty-five million, six hundred ninety-four thousand, six hundred sixty-four".