54638503718668 has 12 divisors (see below), whose sum is σ = 95943720695760. Its totient is φ = 27226012091312.

The previous prime is 54638503718663. The next prime is 54638503718681. The reversal of 54638503718668 is 86681730583645.

It is a super-2 number, since 2×54638503718668² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54638503718597 and 54638503718606.

It is not an unprimeable number, because it can be changed into a prime (54638503718663) 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, 23309940688 + ... + 23309943031.

It is an arithmetic number, because the mean of its divisors is an integer number (7995310057980).

Almost surely, 2^{54638503718668} is an apocalyptic number.

It is an amenable number.

54638503718668 is a deficient number, since it is larger than the sum of its proper divisors (41305216977092).

54638503718668 is a wasteful number, since it uses less digits than its factorization.

54638503718668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46619884016 (or 46619884014 counting only the distinct ones).

The product of its (nonzero) digits is 696729600, while the sum is 70.

The spelling of 54638503718668 in words is "fifty-four trillion, six hundred thirty-eight billion, five hundred three million, seven hundred eighteen thousand, six hundred sixty-eight".