51465913322 has 16 divisors (see below), whose sum is σ = 82582665480. Its totient is φ = 23969568768.

The previous prime is 51465913307. The next prime is 51465913379. The reversal of 51465913322 is 22331956415.

It is a Cunningham number, because it is equal to 226861²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 40068429241 + 11397484081 = 200171^2 + 106759^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51465913322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7799297 + ... + 7805892.

Almost surely, 2^51465913322 is an apocalyptic number.

51465913322 is a deficient number, since it is larger than the sum of its proper divisors (31116752158).

51465913322 is a wasteful number, since it uses less digits than its factorization.

51465913322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15605305.

The product of its digits is 194400, while the sum is 41.

The spelling of 51465913322 in words is "fifty-one billion, four hundred sixty-five million, nine hundred thirteen thousand, three hundred twenty-two".