51445650317657 has 8 divisors (see below), whose sum is σ = 52689077842176. Its totient is φ = 50208424427392.

The previous prime is 51445650317653. The next prime is 51445650317717. The reversal of 51445650317657 is 75671305654415.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51445650317657 - 2² = 51445650317653 is a prime.

It is a super-3 number, since 3×51445650317657³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51445650317596 and 51445650317605.

It is not an unprimeable number, because it can be changed into a prime (51445650317653) 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, 1550391773 + ... + 1550424954.

It is an arithmetic number, because the mean of its divisors is an integer number (6586134730272).

Almost surely, 2^{51445650317657} is an apocalyptic number.

It is an amenable number.

51445650317657 is a deficient number, since it is larger than the sum of its proper divisors (1243427524519).

51445650317657 is a wasteful number, since it uses less digits than its factorization.

51445650317657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100817127.

The product of its (nonzero) digits is 52920000, while the sum is 59.

The spelling of 51445650317657 in words is "fifty-one trillion, four hundred forty-five billion, six hundred fifty million, three hundred seventeen thousand, six hundred fifty-seven".