49990871040 has 192 divisors, whose sum is σ = 174472159680. Its totient is φ = 12118917120.

The previous prime is 49990871039. The next prime is 49990871111. The reversal of 49990871040 is 4017809994.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263952 + ... + 411888.

It is an arithmetic number, because the mean of its divisors is an integer number (908709165).

Almost surely, 2^49990871040 is an apocalyptic number.

49990871040 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 49990871040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87236079840).

49990871040 is an abundant number, since it is smaller than the sum of its proper divisors (124481288640).

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

49990871040 is a wasteful number, since it uses less digits than its factorization.

49990871040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147978 (or 147958 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 49990871040 in words is "forty-nine billion, nine hundred ninety million, eight hundred seventy-one thousand, forty".