51645507046 has 16 divisors (see below), whose sum is σ = 88932178944. Its totient is φ = 22034532744.

The previous prime is 51645506999. The next prime is 51645507059. The reversal of 51645507046 is 64070554615.

It is a super-2 number, since 2×51645507046² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51645506993 and 51645507011.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8268100 + ... + 8274343.

It is an arithmetic number, because the mean of its divisors is an integer number (5558261184).

Almost surely, 2^51645507046 is an apocalyptic number.

51645507046 is a deficient number, since it is larger than the sum of its proper divisors (37286671898).

51645507046 is a wasteful number, since it uses less digits than its factorization.

51645507046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16542675.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 51645507046 in words is "fifty-one billion, six hundred forty-five million, five hundred seven thousand, forty-six".