49865100018 has 16 divisors (see below), whose sum is σ = 99733942656. Its totient is φ = 16621076240.

The previous prime is 49865100013. The next prime is 49865100029. The reversal of 49865100018 is 81000156894.

It is not an unprimeable number, because it can be changed into a prime (49865100013) 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 7 ways as a sum of consecutive naturals, for example, 35308 + ... + 317768.

It is an arithmetic number, because the mean of its divisors is an integer number (6233371416).

Almost surely, 2^49865100018 is an apocalyptic number.

49865100018 is an abundant number, since it is smaller than the sum of its proper divisors (49868842638).

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

49865100018 is a wasteful number, since it uses less digits than its factorization.

49865100018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311889.

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 49865100018 in words is "forty-nine billion, eight hundred sixty-five million, one hundred thousand, eighteen".