49997488128 has 224 divisors, whose sum is σ = 153384723456. Its totient is φ = 14189395968.

The previous prime is 49997488069. The next prime is 49997488213. The reversal of 49997488128 is 82188479994.

It is a tau number, because it is divible by the number of its divisors (224).

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, 28040325 + ... + 28042107.

Almost surely, 2^49997488128 is an apocalyptic number.

49997488128 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 49997488128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76692361728).

49997488128 is an abundant number, since it is smaller than the sum of its proper divisors (103387235328).

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

49997488128 is a wasteful number, since it uses less digits than its factorization.

49997488128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1958 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 69.

The spelling of 49997488128 in words is "forty-nine billion, nine hundred ninety-seven million, four hundred eighty-eight thousand, one hundred twenty-eight".