51253182646 has 16 divisors (see below), whose sum is σ = 78337476864. Its totient is φ = 25140778624.

The previous prime is 51253182637. The next prime is 51253182647. The reversal of 51253182646 is 64628135215.

It is a super-2 number, since 2×51253182646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51253182647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2165790 + ... + 2189326.

It is an arithmetic number, because the mean of its divisors is an integer number (4896092304).

Almost surely, 2^51253182646 is an apocalyptic number.

51253182646 is a deficient number, since it is larger than the sum of its proper divisors (27084294218).

51253182646 is a wasteful number, since it uses less digits than its factorization.

51253182646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44135.

The product of its digits is 345600, while the sum is 43.

The spelling of 51253182646 in words is "fifty-one billion, two hundred fifty-three million, one hundred eighty-two thousand, six hundred forty-six".