49687517880 has 2048 divisors, whose sum is σ = 243855360000. Its totient is φ = 8659353600.

The previous prime is 49687517863. The next prime is 49687517903. The reversal of 49687517880 is 8871578694.

49687517880 is a `hidden beast` number, since 496 + 8 + 75 + 1 + 78 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 842161291 + ... + 842161349.

It is an arithmetic number, because the mean of its divisors is an integer number (119070000).

Almost surely, 2^49687517880 is an apocalyptic number.

49687517880 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 49687517880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121927680000).

49687517880 is an abundant number, since it is smaller than the sum of its proper divisors (194167842120).

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

49687517880 is a wasteful number, since it uses less digits than its factorization.

49687517880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 49687517880 in words is "forty-nine billion, six hundred eighty-seven million, five hundred seventeen thousand, eight hundred eighty".