54066402621 has 24 divisors (see below), whose sum is σ = 97366336704. Its totient is φ = 28086442560.

The previous prime is 54066402601. The next prime is 54066402623. The reversal of 54066402621 is 12620466045.

54066402621 is a `hidden beast` number, since 5 + 4 + 0 + 6 + 640 + 2 + 6 + 2 + 1 = 666.

It is not a de Polignac number, because 54066402621 - 2⁵ = 54066402589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54066402623) 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, 39008256 + ... + 39009641.

It is an arithmetic number, because the mean of its divisors is an integer number (4056930696).

Almost surely, 2^54066402621 is an apocalyptic number.

It is an amenable number.

54066402621 is a deficient number, since it is larger than the sum of its proper divisors (43299934083).

54066402621 is a wasteful number, since it uses less digits than its factorization.

54066402621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78017921 (or 78017918 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 54066402621 its reverse (12620466045), we get a palindrome (66686868666).

The spelling of 54066402621 in words is "fifty-four billion, sixty-six million, four hundred two thousand, six hundred twenty-one".