51657358467385 has 8 divisors (see below), whose sum is σ = 67624178357376. Its totient is φ = 37568987976240.

The previous prime is 51657358467349. The next prime is 51657358467389. The reversal of 51657358467385 is 58376485375615.

51657358467385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51657358467385 - 2⁷ = 51657358467257 is a prime.

It is a super-2 number, since 2×51657358467385² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51657358467389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469612349649 + ... + 469612349758.

It is an arithmetic number, because the mean of its divisors is an integer number (8453022294672).

Almost surely, 2^{51657358467385} is an apocalyptic number.

51657358467385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51657358467385 is a deficient number, since it is larger than the sum of its proper divisors (15966819889991).

51657358467385 is a wasteful number, since it uses less digits than its factorization.

51657358467385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939224699423.

The product of its digits is 2540160000, while the sum is 73.

The spelling of 51657358467385 in words is "fifty-one trillion, six hundred fifty-seven billion, three hundred fifty-eight million, four hundred sixty-seven thousand, three hundred eighty-five".