49998618617565 has 8 divisors (see below), whose sum is σ = 79997789788128. Its totient is φ = 26665929929360.

The previous prime is 49998618617539. The next prime is 49998618617569. The reversal of 49998618617565 is 56571681689994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49998618617565 - 2⁹ = 49998618617053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49998618617569) 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 7 ways as a sum of consecutive naturals, for example, 1666620620571 + ... + 1666620620600.

It is an arithmetic number, because the mean of its divisors is an integer number (9999723723516).

Almost surely, 2^{49998618617565} is an apocalyptic number.

It is an amenable number.

49998618617565 is a deficient number, since it is larger than the sum of its proper divisors (29999171170563).

49998618617565 is a wasteful number, since it uses less digits than its factorization.

49998618617565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333241241179.

The product of its digits is 7054387200, while the sum is 84.

The spelling of 49998618617565 in words is "forty-nine trillion, nine hundred ninety-eight billion, six hundred eighteen million, six hundred seventeen thousand, five hundred sixty-five".