51360665446 has 8 divisors (see below), whose sum is σ = 77175922824. Its totient is φ = 25635357840.

The previous prime is 51360665431. The next prime is 51360665449. The reversal of 51360665446 is 64456606315.

It is a happy number.

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

It is a super-4 number, since 4×51360665446⁴ (a number of 44 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51360665396 and 51360665405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51360665449) 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, 22486015 + ... + 22488298.

It is an arithmetic number, because the mean of its divisors is an integer number (9646990353).

Almost surely, 2^51360665446 is an apocalyptic number.

51360665446 is a deficient number, since it is larger than the sum of its proper divisors (25815257378).

51360665446 is a wasteful number, since it uses less digits than its factorization.

51360665446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44974886.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 51360665446 in words is "fifty-one billion, three hundred sixty million, six hundred sixty-five thousand, four hundred forty-six".