50505605064 has 96 divisors (see below), whose sum is σ = 137905560000. Its totient is φ = 16697805696.

The previous prime is 50505605063. The next prime is 50505605113. The reversal of 50505605064 is 46050650505.

It is a happy number.

50505605064 is a `hidden beast` number, since 50 + 50 + 56 + 0 + 506 + 4 = 666.

It is a super-2 number, since 2×50505605064² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (50505605063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6767367 + ... + 6774825.

It is an arithmetic number, because the mean of its divisors is an integer number (1436516250).

Almost surely, 2^50505605064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50505605064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68952780000).

50505605064 is an abundant number, since it is smaller than the sum of its proper divisors (87399954936).

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

50505605064 is a wasteful number, since it uses less digits than its factorization.

50505605064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8227 (or 8220 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 50505605064 in words is "fifty billion, five hundred five million, six hundred five thousand, sixty-four".