51646662046 has 8 divisors (see below), whose sum is σ = 88537134960. Its totient is φ = 22134283728.

The previous prime is 51646662043. The next prime is 51646662131. The reversal of 51646662046 is 64026664615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51646662046² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51646661987 and 51646662005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51646662043) 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, 1844523631 + ... + 1844523658.

It is an arithmetic number, because the mean of its divisors is an integer number (11067141870).

Almost surely, 2^51646662046 is an apocalyptic number.

51646662046 is a deficient number, since it is larger than the sum of its proper divisors (36890472914).

51646662046 is a wasteful number, since it uses less digits than its factorization.

51646662046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689047298.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 51646662046 in words is "fifty-one billion, six hundred forty-six million, six hundred sixty-two thousand, forty-six".