49161884436 has 216 divisors, whose sum is σ = 146711597760. Its totient is φ = 13838356224.

The previous prime is 49161884399. The next prime is 49161884449. The reversal of 49161884436 is 63448816194.

49161884436 is a `hidden beast` number, since 4 + 9 + 16 + 188 + 443 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 76456731 + ... + 76457373.

It is an arithmetic number, because the mean of its divisors is an integer number (679220360).

Almost surely, 2^49161884436 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 49161884436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73355798880).

49161884436 is an abundant number, since it is smaller than the sum of its proper divisors (97549713324).

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

49161884436 is a wasteful number, since it uses less digits than its factorization.

49161884436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1231 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 49161884436 in words is "forty-nine billion, one hundred sixty-one million, eight hundred eighty-four thousand, four hundred thirty-six".