51106105505101 has 4 divisors (see below), whose sum is σ = 51373676738304. Its totient is φ = 50838534271900.

The previous prime is 51106105505089. The next prime is 51106105505137. The reversal of 51106105505101 is 10150550160115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51106105505101 - 2⁵ = 51106105505069 is a prime.

It is a super-2 number, since 2×51106105505101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51106105505401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133785616315 + ... + 133785616696.

It is an arithmetic number, because the mean of its divisors is an integer number (12843419184576).

Almost surely, 2^{51106105505101} is an apocalyptic number.

It is an amenable number.

51106105505101 is a deficient number, since it is larger than the sum of its proper divisors (267571233203).

51106105505101 is a wasteful number, since it uses less digits than its factorization.

51106105505101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267571233202.

The product of its (nonzero) digits is 3750, while the sum is 31.

Adding to 51106105505101 its reverse (10150550160115), we get a palindrome (61256655665216).

The spelling of 51106105505101 in words is "fifty-one trillion, one hundred six billion, one hundred five million, five hundred five thousand, one hundred one".