5106640665 has 96 divisors (see below), whose sum is σ = 9880738560. Its totient is φ = 2205739008.

The previous prime is 5106640661. The next prime is 5106640667. The reversal of 5106640665 is 5660466015.

It is not a de Polignac number, because 5106640665 - 2² = 5106640661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5106640661) 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 95 ways as a sum of consecutive naturals, for example, 4942989 + ... + 4944021.

It is an arithmetic number, because the mean of its divisors is an integer number (102924360).

Almost surely, 2^5106640665 is an apocalyptic number.

It is an amenable number.

5106640665 is a deficient number, since it is larger than the sum of its proper divisors (4774097895).

5106640665 is a wasteful number, since it uses less digits than its factorization.

5106640665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 5106640665 is about 71460.7631151529. The cubic root of 5106640665 is about 1722.0473934814.

The spelling of 5106640665 in words is "five billion, one hundred six million, six hundred forty thousand, six hundred sixty-five".