6606542499 has 16 divisors (see below), whose sum is σ = 9339557760. Its totient is φ = 4139648640.

The previous prime is 6606542491. The next prime is 6606542507. The reversal of 6606542499 is 9942456066.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6606542491) and next prime (6606542507).

It is not a de Polignac number, because 6606542499 - 2³ = 6606542491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (6606542491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49957 + ... + 125334.

It is an arithmetic number, because the mean of its divisors is an integer number (583722360).

Almost surely, 2^6606542499 is an apocalyptic number.

6606542499 is a deficient number, since it is larger than the sum of its proper divisors (2733015261).

6606542499 is a wasteful number, since it uses less digits than its factorization.

6606542499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176050.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The square root of 6606542499 is about 81280.6403702628. The cubic root of 6606542499 is about 1876.3970623992.

The spelling of 6606542499 in words is "six billion, six hundred six million, five hundred forty-two thousand, four hundred ninety-nine".