49879851840 has 2016 divisors, whose sum is σ = 239046837120. Its totient is φ = 9782083584.

The previous prime is 49879851809. The next prime is 49879851881. The reversal of 49879851840 is 4815897894.

49879851840 is a `hidden beast` number, since 4 + 9 + 8 + 79 + 8 + 518 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

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 polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 941129254 + ... + 941129306.

It is an arithmetic number, because the mean of its divisors is an integer number (118574820).

Almost surely, 2^49879851840 is an apocalyptic number.

49879851840 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 49879851840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119523418560).

49879851840 is an abundant number, since it is smaller than the sum of its proper divisors (189166985280).

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

49879851840 is a wasteful number, since it uses less digits than its factorization.

49879851840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 49879851840 in words is "forty-nine billion, eight hundred seventy-nine million, eight hundred fifty-one thousand, eight hundred forty".