54321611612305 has 12 divisors (see below), whose sum is σ = 68143329806580. Its totient is φ = 41567841927392.

The previous prime is 54321611612291. The next prime is 54321611612309. The reversal of 54321611612305 is 50321611612345.

It can be written as a sum of positive squares in 2 ways, for example, as 20845470387856 + 33476141224449 = 4565684^2 + 5785857^2 .

It is not a de Polignac number, because 54321611612305 - 2²³ = 54321603223697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54321611612309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10268733010 + ... + 10268738299.

It is an arithmetic number, because the mean of its divisors is an integer number (5678610817215).

Almost surely, 2^{54321611612305} is an apocalyptic number.

It is an amenable number.

54321611612305 is a deficient number, since it is larger than the sum of its proper divisors (13821718194275).

54321611612305 is a wasteful number, since it uses less digits than its factorization.

54321611612305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20537471360 (or 20537471337 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

Adding to 54321611612305 its sum of digits (40), we get a palindrome (54321611612345).

The spelling of 54321611612305 in words is "fifty-four trillion, three hundred twenty-one billion, six hundred eleven million, six hundred twelve thousand, three hundred five".