4991938818048 has 1872 divisors, whose sum is σ = 19389685398720. Its totient is φ = 1203354206208.

The previous prime is 4991938818001. The next prime is 4991938818059. The reversal of 4991938818048 is 8408188391994.

4991938818048 is a `hidden beast` number, since 49 + 91 + 9 + 388 + 1 + 80 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (1872).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 51463286736 + ... + 51463286832.

Almost surely, 2^{4991938818048} is an apocalyptic number.

4991938818048 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 4991938818048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9694842699360).

4991938818048 is an abundant number, since it is smaller than the sum of its proper divisors (14397746580672).

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

4991938818048 is a wasteful number, since it uses less digits than its factorization.

4991938818048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 72.

The spelling of 4991938818048 in words is "four trillion, nine hundred ninety-one billion, nine hundred thirty-eight million, eight hundred eighteen thousand, forty-eight".