50389172064 has 576 divisors, whose sum is σ = 193377300480. Its totient is φ = 12515627520.

The previous prime is 50389172051. The next prime is 50389172069. The reversal of 50389172064 is 46027198305.

50389172064 is a `hidden beast` number, since 50 + 389 + 17 + 206 + 4 = 666.

It is a super-2 number, since 2×50389172064² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50389172069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13769467 + ... + 13773125.

It is an arithmetic number, because the mean of its divisors is an integer number (335724480).

It is a 1-persistent number, because it is pandigital, but 2⋅50389172064 = 100778344128 is not.

Almost surely, 2^50389172064 is an apocalyptic number.

50389172064 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 50389172064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96688650240).

50389172064 is an abundant number, since it is smaller than the sum of its proper divisors (142988128416).

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

50389172064 is a wasteful number, since it uses less digits than its factorization.

50389172064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725 (or 3705 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 50389172064 in words is "fifty billion, three hundred eighty-nine million, one hundred seventy-two thousand, sixty-four".