7479136042639 has 4 divisors (see below), whose sum is σ = 7479286272880. Its totient is φ = 7478985812400.

The previous prime is 7479136042549. The next prime is 7479136042661. The reversal of 7479136042639 is 9362406319747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7479136042639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7479136042699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75040419 + ... + 75140020.

It is an arithmetic number, because the mean of its divisors is an integer number (1869821568220).

Almost surely, 2^{7479136042639} is an apocalyptic number.

7479136042639 is a deficient number, since it is larger than the sum of its proper divisors (150230241).

7479136042639 is a wasteful number, since it uses less digits than its factorization.

7479136042639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150230240.

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 7479136042639 in words is "seven trillion, four hundred seventy-nine billion, one hundred thirty-six million, forty-two thousand, six hundred thirty-nine".