49161909888 has 768 divisors, whose sum is σ = 183026188800. Its totient is φ = 12318179328.

The previous prime is 49161909869. The next prime is 49161909913. The reversal of 49161909888 is 88890916194.

49161909888 is a `hidden beast` number, since 4 + 9 + 1 + 619 + 0 + 9 + 8 + 8 + 8 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 313133106 + ... + 313133262.

It is an arithmetic number, because the mean of its divisors is an integer number (238315350).

Almost surely, 2^49161909888 is an apocalyptic number.

49161909888 is a gapful number since it is divisible by the number (48) 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 49161909888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91513094400).

49161909888 is an abundant number, since it is smaller than the sum of its proper divisors (133864278912).

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

49161909888 is a wasteful number, since it uses less digits than its factorization.

49161909888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 63.

The spelling of 49161909888 in words is "forty-nine billion, one hundred sixty-one million, nine hundred nine thousand, eight hundred eighty-eight".