50010111105561 has 40 divisors (see below), whose sum is σ = 78639711321600. Its totient is φ = 31584799139040.

The previous prime is 50010111105553. The next prime is 50010111105571. The reversal of 50010111105561 is 16550111101005.

50010111105561 is a `hidden beast` number, since 5 + 0 + 0 + 101 + 1 + 1 + 1 + 0 + 556 + 1 = 666.

It is not a de Polignac number, because 50010111105561 - 2³ = 50010111105553 is a prime.

It is a super-4 number, since 4×50010111105561⁴ (a number of 56 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (50010111105511) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 103473655 + ... + 103955843.

It is an arithmetic number, because the mean of its divisors is an integer number (1965992783040).

Almost surely, 2^{50010111105561} is an apocalyptic number.

It is an amenable number.

50010111105561 is a deficient number, since it is larger than the sum of its proper divisors (28629600216039).

50010111105561 is a wasteful number, since it uses less digits than its factorization.

50010111105561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549611 (or 549602 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 27.

Adding to 50010111105561 its reverse (16550111101005), we get a palindrome (66560222206566).

The spelling of 50010111105561 in words is "fifty trillion, ten billion, one hundred eleven million, one hundred five thousand, five hundred sixty-one".