49998425520 has 320 divisors, whose sum is σ = 166946457600. Its totient is φ = 12340408320.

The previous prime is 49998425471. The next prime is 49998425549. The reversal of 49998425520 is 2552489994.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48121161 + ... + 48122199.

It is an arithmetic number, because the mean of its divisors is an integer number (521707680).

Almost surely, 2^49998425520 is an apocalyptic number.

49998425520 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 49998425520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83473228800).

49998425520 is an abundant number, since it is smaller than the sum of its proper divisors (116948032080).

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

49998425520 is a wasteful number, since it uses less digits than its factorization.

49998425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 49998425520 in words is "forty-nine billion, nine hundred ninety-eight million, four hundred twenty-five thousand, five hundred twenty".