54666364221 has 48 divisors (see below), whose sum is σ = 90923010048. Its totient is φ = 31003257600.

The previous prime is 54666364219. The next prime is 54666364229. The reversal of 54666364221 is 12246366645.

It is a happy number.

It is not a de Polignac number, because 54666364221 - 2¹ = 54666364219 is a prime.

It is a super-2 number, since 2×54666364221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54666364229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5494111 + ... + 5504051.

It is an arithmetic number, because the mean of its divisors is an integer number (1894229376).

Almost surely, 2^54666364221 is an apocalyptic number.

It is an amenable number.

54666364221 is a deficient number, since it is larger than the sum of its proper divisors (36256645827).

54666364221 is a wasteful number, since it uses less digits than its factorization.

54666364221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10602 (or 10599 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The spelling of 54666364221 in words is "fifty-four billion, six hundred sixty-six million, three hundred sixty-four thousand, two hundred twenty-one".