49889368891440 has 1920 divisors, whose sum is σ = 202984348170240. Its totient is φ = 10856153088000.

The previous prime is 49889368891433. The next prime is 49889368891451. The reversal of 49889368891440 is 4419886398894.

49889368891440 is a `hidden beast` number, since 4 + 9 + 8 + 8 + 9 + 3 + 6 + 88 + 91 + 440 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 49889368891440.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 51379370155 + ... + 51379371125.

It is an arithmetic number, because the mean of its divisors is an integer number (105721014672).

Almost surely, 2^{49889368891440} is an apocalyptic number.

49889368891440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49889368891440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101492174085120).

49889368891440 is an abundant number, since it is smaller than the sum of its proper divisors (153094979278800).

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

49889368891440 is a wasteful number, since it uses less digits than its factorization.

49889368891440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 3439853568, while the sum is 81.

The spelling of 49889368891440 in words is "forty-nine trillion, eight hundred eighty-nine billion, three hundred sixty-eight million, eight hundred ninety-one thousand, four hundred forty".