50998616064 has 672 divisors, whose sum is σ = 177757384896. Its totient is φ = 14438891520.

The previous prime is 50998616041. The next prime is 50998616069. The reversal of 50998616064 is 46061689905.

It is a happy number.

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 50998616064.

It is not an unprimeable number, because it can be changed into a prime (50998616069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372252604 + ... + 372252740.

It is an arithmetic number, because the mean of its divisors is an integer number (264519918).

Almost surely, 2^50998616064 is an apocalyptic number.

50998616064 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 50998616064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88878692448).

50998616064 is an abundant number, since it is smaller than the sum of its proper divisors (126758768832).

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

50998616064 is a wasteful number, since it uses less digits than its factorization.

50998616064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 50998616064 in words is "fifty billion, nine hundred ninety-eight million, six hundred sixteen thousand, sixty-four".