51660055514654 has 8 divisors (see below), whose sum is σ = 77491881607080. Its totient is φ = 25829428312296.

The previous prime is 51660055514567. The next prime is 51660055514657. The reversal of 51660055514654 is 45641555006615.

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

It is a super-2 number, since 2×51660055514654² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51660055514596 and 51660055514605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51660055514657) 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, 299614784 + ... + 299787155.

It is an arithmetic number, because the mean of its divisors is an integer number (9686485200885).

Almost surely, 2^{51660055514654} is an apocalyptic number.

51660055514654 is a deficient number, since it is larger than the sum of its proper divisors (25831826092426).

51660055514654 is a wasteful number, since it uses less digits than its factorization.

51660055514654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599445034.

The product of its (nonzero) digits is 10800000, while the sum is 53.

The spelling of 51660055514654 in words is "fifty-one trillion, six hundred sixty billion, fifty-five million, five hundred fourteen thousand, six hundred fifty-four".