50120000001 has 12 divisors (see below), whose sum is σ = 72404500480. Its totient is φ = 33409204920.

The previous prime is 50119999997. The next prime is 50120000009. The reversal of 50120000001 is 10000002105.

It is a happy number.

It is not a de Polignac number, because 50120000001 - 2² = 50119999997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50120000009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266221 + ... + 413658.

Almost surely, 2^50120000001 is an apocalyptic number.

It is an amenable number.

50120000001 is a deficient number, since it is larger than the sum of its proper divisors (22284500479).

50120000001 is a wasteful number, since it uses less digits than its factorization.

50120000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688076 (or 688073 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

Adding to 50120000001 its reverse (10000002105), we get a palindrome (60120002106).

The spelling of 50120000001 in words is "fifty billion, one hundred twenty million, one", and thus it is an aban number.