50171939946 has 20 divisors (see below), whose sum is σ = 112422310242. Its totient is φ = 16723979928.

The previous prime is 50171939941. The next prime is 50171940011. The reversal of 50171939946 is 64993917105.

50171939946 is a `hidden beast` number, since 501 + 7 + 1 + 9 + 3 + 99 + 46 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46055306025 + 4116633921 = 214605^2 + 64161^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 50171939892 and 50171939901.

It is not an unprimeable number, because it can be changed into a prime (50171939941) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 154851505 + ... + 154851828.

Almost surely, 2^50171939946 is an apocalyptic number.

50171939946 is an abundant number, since it is smaller than the sum of its proper divisors (62250370296).

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

50171939946 is a wasteful number, since it uses less digits than its factorization.

50171939946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309703347 (or 309703338 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The spelling of 50171939946 in words is "fifty billion, one hundred seventy-one million, nine hundred thirty-nine thousand, nine hundred forty-six".