51665056614 has 48 divisors (see below), whose sum is σ = 118999324080. Its totient is φ = 16153732800.

The previous prime is 51665056613. The next prime is 51665056627. The reversal of 51665056614 is 41665056615.

51665056614 is a `hidden beast` number, since 5 + 16 + 65 + 0 + 566 + 14 = 666.

51665056614 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51665056614³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51665056614.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51665056613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 713317 + ... + 782400.

It is an arithmetic number, because the mean of its divisors is an integer number (2479152585).

Almost surely, 2^51665056614 is an apocalyptic number.

51665056614 is an abundant number, since it is smaller than the sum of its proper divisors (67334267466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51665056614 is a wasteful number, since it uses less digits than its factorization.

51665056614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495845 (or 1495842 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

Subtracting from 51665056614 its reverse (41665056615), we obtain a palindrome (9999999999).

The spelling of 51665056614 in words is "fifty-one billion, six hundred sixty-five million, fifty-six thousand, six hundred fourteen".