50000049681 has 8 divisors (see below), whose sum is σ = 70588305504. Its totient is φ = 31372580160.

The previous prime is 50000049661. The next prime is 50000049689. The reversal of 50000049681 is 18694000005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50000049681 - 2¹⁹ = 49999525393 is a prime.

It is a super-2 number, since 2×50000049681² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50000049689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490196515 + ... + 490196616.

It is an arithmetic number, because the mean of its divisors is an integer number (8823538188).

Almost surely, 2^50000049681 is an apocalyptic number.

50000049681 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

50000049681 is a deficient number, since it is larger than the sum of its proper divisors (20588255823).

50000049681 is a wasteful number, since it uses less digits than its factorization.

50000049681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980393151.

The product of its (nonzero) digits is 8640, while the sum is 33.

Adding to 50000049681 its reverse (18694000005), we get a palindrome (68694049686).

The spelling of 50000049681 in words is "fifty billion, forty-nine thousand, six hundred eighty-one".