55066462066421 has 8 divisors (see below), whose sum is σ = 59302705713720. Its totient is φ = 50830270126272.

The previous prime is 55066462066411. The next prime is 55066462066423. The reversal of 55066462066421 is 12466026466055.

It can be written as a sum of positive squares in 4 ways, for example, as 3434850622225 + 51631611444196 = 1853335^2 + 7185514^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-55066462066421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55066462066423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10700726 + ... + 14987943.

It is an arithmetic number, because the mean of its divisors is an integer number (7412838214215).

Almost surely, 2^{55066462066421} is an apocalyptic number.

It is an amenable number.

55066462066421 is a deficient number, since it is larger than the sum of its proper divisors (4236243647299).

55066462066421 is a wasteful number, since it uses less digits than its factorization.

55066462066421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25853575.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 55066462066421 in words is "fifty-five trillion, sixty-six billion, four hundred sixty-two million, sixty-six thousand, four hundred twenty-one".