45578332821 has 32 divisors (see below), whose sum is σ = 73789482240. Its totient is φ = 24467014656.

The previous prime is 45578332777. The next prime is 45578332867. The reversal of 45578332821 is 12823387554.

45578332821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45578332821 - 2¹⁷ = 45578201749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45578332871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 988836 + ... + 1033901.

It is an arithmetic number, because the mean of its divisors is an integer number (2305921320).

Almost surely, 2^45578332821 is an apocalyptic number.

It is an amenable number.

45578332821 is a deficient number, since it is larger than the sum of its proper divisors (28211149419).

45578332821 is a wasteful number, since it uses less digits than its factorization.

45578332821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022813.

The product of its digits is 1612800, while the sum is 48.

It can be divided in two parts, 4557833 and 2821, that added together give a palindrome (4560654).

The spelling of 45578332821 in words is "forty-five billion, five hundred seventy-eight million, three hundred thirty-two thousand, eight hundred twenty-one".