51303155564146 has 4 divisors (see below), whose sum is σ = 76954733346222. Its totient is φ = 25651577782072.

The previous prime is 51303155564123. The next prime is 51303155564207. The reversal of 51303155564146 is 64146555130315.

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

It can be written as a sum of positive squares in only one way, i.e., 29062395812025 + 22240759752121 = 5390955^2 + 4716011^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51303155564146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825788891035 + ... + 12825788891038.

Almost surely, 2^{51303155564146} is an apocalyptic number.

51303155564146 is a deficient number, since it is larger than the sum of its proper divisors (25651577782076).

51303155564146 is a wasteful number, since it uses less digits than its factorization.

51303155564146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25651577782075.

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 51303155564146 in words is "fifty-one trillion, three hundred three billion, one hundred fifty-five million, five hundred sixty-four thousand, one hundred forty-six".