50289628464 has 160 divisors (see below), whose sum is σ = 148786310400. Its totient is φ = 16253084160.

The previous prime is 50289628421. The next prime is 50289628481. The reversal of 50289628464 is 46482698205.

50289628464 is a `hidden beast` number, since 5 + 0 + 2 + 8 + 9 + 628 + 4 + 6 + 4 = 666.

It is a Smith number, since the sum of its digits (54) 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 (54).

It is a self number, because there is not a number n which added to its sum of digits gives 50289628464.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2878347 + ... + 2895765.

It is an arithmetic number, because the mean of its divisors is an integer number (929914440).

Almost surely, 2^50289628464 is an apocalyptic number.

50289628464 is a gapful number since it is divisible by the number (54) 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 50289628464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74393155200).

50289628464 is an abundant number, since it is smaller than the sum of its proper divisors (98496681936).

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

50289628464 is a wasteful number, since it uses less digits than its factorization.

50289628464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17640 (or 17628 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 50289628464 in words is "fifty billion, two hundred eighty-nine million, six hundred twenty-eight thousand, four hundred sixty-four".