50101018781 has 16 divisors (see below), whose sum is σ = 55925572608. Its totient is φ = 44491834800.

The previous prime is 50101018771. The next prime is 50101018783. The reversal of 50101018781 is 18781010105.

It is a cyclic number.

It is not a de Polignac number, because 50101018781 - 2⁶ = 50101018717 is a prime.

It is a super-2 number, since 2×50101018781² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50101018783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177746 + ... + 363036.

It is an arithmetic number, because the mean of its divisors is an integer number (3495348288).

Almost surely, 2^50101018781 is an apocalyptic number.

It is an amenable number.

50101018781 is a deficient number, since it is larger than the sum of its proper divisors (5824553827).

50101018781 is a wasteful number, since it uses less digits than its factorization.

50101018781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185872.

The product of its (nonzero) digits is 2240, while the sum is 32.

Adding to 50101018781 its reverse (18781010105), we get a palindrome (68882028886).

The spelling of 50101018781 in words is "fifty billion, one hundred one million, eighteen thousand, seven hundred eighty-one".