50478289992 has 256 divisors, whose sum is σ = 160743744000. Its totient is φ = 14539751424.

The previous prime is 50478289969. The next prime is 50478289993. The reversal of 50478289992 is 29998287405.

It is a happy number.

50478289992 is a `hidden beast` number, since 50 + 478 + 28 + 9 + 9 + 92 = 666.

It is not an unprimeable number, because it can be changed into a prime (50478289993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9210309 + ... + 9215787.

It is an arithmetic number, because the mean of its divisors is an integer number (627905250).

Almost surely, 2^50478289992 is an apocalyptic number.

50478289992 is a gapful number since it is divisible by the number (52) 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 50478289992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80371872000).

50478289992 is an abundant number, since it is smaller than the sum of its proper divisors (110265454008).

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

50478289992 is a wasteful number, since it uses less digits than its factorization.

50478289992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717 (or 5707 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 50478289992 in words is "fifty billion, four hundred seventy-eight million, two hundred eighty-nine thousand, nine hundred ninety-two".