49887866289 has 4 divisors (see below), whose sum is σ = 66517155056. Its totient is φ = 33258577524.

The previous prime is 49887866263. The next prime is 49887866299. The reversal of 49887866289 is 98266878894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 49887866289 - 2⁵ = 49887866257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49887866289.

It is not an unprimeable number, because it can be changed into a prime (49887866209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8314644379 + ... + 8314644384.

It is an arithmetic number, because the mean of its divisors is an integer number (16629288764).

Almost surely, 2^49887866289 is an apocalyptic number.

It is an amenable number.

49887866289 is a deficient number, since it is larger than the sum of its proper divisors (16629288767).

49887866289 is a wasteful number, since it uses less digits than its factorization.

49887866289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16629288766.

The product of its digits is 668860416, while the sum is 75.

The spelling of 49887866289 in words is "forty-nine billion, eight hundred eighty-seven million, eight hundred sixty-six thousand, two hundred eighty-nine".