49640881152 has 88 divisors (see below), whose sum is σ = 133525810000. Its totient is φ = 16395042816.

The previous prime is 49640881139. The next prime is 49640881187. The reversal of 49640881152 is 25118804694.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 260724 + ... + 408972.

It is an arithmetic number, because the mean of its divisors is an integer number (1517338750).

Almost surely, 2^49640881152 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 49640881152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66762905000).

49640881152 is an abundant number, since it is smaller than the sum of its proper divisors (83884928848).

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

49640881152 is a wasteful number, since it uses less digits than its factorization.

49640881152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148381 (or 148363 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 49640881152 in words is "forty-nine billion, six hundred forty million, eight hundred eighty-one thousand, one hundred fifty-two".