51200106145 has 4 divisors (see below), whose sum is σ = 61440127380. Its totient is φ = 40960084912.

The previous prime is 51200106143. The next prime is 51200106169. The reversal of 51200106145 is 54160100215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11216504464 + 39983601681 = 105908^2 + 199959^2 .

It is a cyclic number.

It is not a de Polignac number, because 51200106145 - 2¹ = 51200106143 is a prime.

It is a super-2 number, since 2×51200106145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51200106143) 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, 5120010610 + ... + 5120010619.

It is an arithmetic number, because the mean of its divisors is an integer number (15360031845).

Almost surely, 2^51200106145 is an apocalyptic number.

It is an amenable number.

51200106145 is a deficient number, since it is larger than the sum of its proper divisors (10240021235).

51200106145 is a wasteful number, since it uses less digits than its factorization.

51200106145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240021234.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 51200106145 in words is "fifty-one billion, two hundred million, one hundred six thousand, one hundred forty-five".