49811315868 has 72 divisors (see below), whose sum is σ = 133622929440. Its totient is φ = 15591398400.

The previous prime is 49811315831. The next prime is 49811315881. The reversal of 49811315868 is 86851311894.

It is a happy number.

49811315868 is a `hidden beast` number, since 49 + 8 + 1 + 13 + 1 + 586 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175968 + ... + 361368.

It is an arithmetic number, because the mean of its divisors is an integer number (1855874020).

Almost surely, 2^49811315868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49811315868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66811464720).

49811315868 is an abundant number, since it is smaller than the sum of its proper divisors (83811613572).

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

49811315868 is a wasteful number, since it uses less digits than its factorization.

49811315868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185867 (or 185862 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 49811315868 in words is "forty-nine billion, eight hundred eleven million, three hundred fifteen thousand, eight hundred sixty-eight".