51101005510061 has 6 divisors (see below), whose sum is σ = 55334224901610. Its totient is φ = 47170158932208.

The previous prime is 51101005510043. The next prime is 51101005510069. The reversal of 51101005510061 is 16001550010115.

It can be written as a sum of positive squares in 3 ways, for example, as 1842982729225 + 49258022780836 = 1357565^2 + 7018406^2 .

It is not a de Polignac number, because 51101005510061 - 2¹⁸ = 51101005247917 is a prime.

It is a super-2 number, since 2×51101005510061² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51101005510061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101005510069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151186406666 + ... + 151186407003.

It is an arithmetic number, because the mean of its divisors is an integer number (9222370816935).

Almost surely, 2^{51101005510061} is an apocalyptic number.

It is an amenable number.

51101005510061 is a deficient number, since it is larger than the sum of its proper divisors (4233219391549).

51101005510061 is a wasteful number, since it uses less digits than its factorization.

51101005510061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302372813695 (or 302372813682 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 51101005510061 its reverse (16001550010115), we get a palindrome (67102555520176).

The spelling of 51101005510061 in words is "fifty-one trillion, one hundred one billion, five million, five hundred ten thousand, sixty-one".