51105054736897 has 20 divisors (see below), whose sum is σ = 60233645684996. Its totient is φ = 43352741376000.

The previous prime is 51105054736843. The next prime is 51105054736979. The reversal of 51105054736897 is 79863745050115.

It can be written as a sum of positive squares in 2 ways, for example, as 28121554456576 + 22983500280321 = 5302976^2 + 4794111^2 .

It is not a de Polignac number, because 51105054736897 - 2¹⁵ = 51105054704129 is a prime.

It is a super-2 number, since 2×51105054736897² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51105054736097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 109483104 + ... + 109948897.

Almost surely, 2^{51105054736897} is an apocalyptic number.

It is an amenable number.

51105054736897 is a deficient number, since it is larger than the sum of its proper divisors (9128590948099).

51105054736897 is an frugal number, since it uses more digits than its factorization.

51105054736897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219432126 (or 219432105 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 61.

The spelling of 51105054736897 in words is "fifty-one trillion, one hundred five billion, fifty-four million, seven hundred thirty-six thousand, eight hundred ninety-seven".