50778521250 has 80 divisors (see below), whose sum is σ = 133585114080. Its totient is φ = 12828240000.

The previous prime is 50778521221. The next prime is 50778521257. The reversal of 50778521250 is 5212587705.

It is not an unprimeable number, because it can be changed into a prime (50778521257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 285091 + ... + 427590.

It is an arithmetic number, because the mean of its divisors is an integer number (1669813926).

Almost surely, 2^50778521250 is an apocalyptic number.

50778521250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

50778521250 is an abundant number, since it is smaller than the sum of its proper divisors (82806592830).

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

50778521250 is a wasteful number, since it uses less digits than its factorization.

50778521250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712725 (or 712710 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 42.

The spelling of 50778521250 in words is "fifty billion, seven hundred seventy-eight million, five hundred twenty-one thousand, two hundred fifty".