50394161664 has 800 divisors, whose sum is σ = 192412256256. Its totient is φ = 12750151680.

The previous prime is 50394161639. The next prime is 50394161693. The reversal of 50394161664 is 46616149305.

50394161664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 137313609 + ... + 137313975.

Almost surely, 2^50394161664 is an apocalyptic number.

50394161664 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 50394161664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96206128128).

50394161664 is an abundant number, since it is smaller than the sum of its proper divisors (142018094592).

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

50394161664 is a wasteful number, since it uses less digits than its factorization.

50394161664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 50394161664 in words is "fifty billion, three hundred ninety-four million, one hundred sixty-one thousand, six hundred sixty-four".