5451618020 has 12 divisors (see below), whose sum is σ = 11448397884. Its totient is φ = 2180647200.

The previous prime is 5451617993. The next prime is 5451618023. The reversal of 5451618020 is 208161545.

It can be written as a sum of positive squares in 2 ways, for example, as 750321664 + 4701296356 = 27392^2 + 68566^2 .

It is not an unprimeable number, because it can be changed into a prime (5451618023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136290431 + ... + 136290470.

It is an arithmetic number, because the mean of its divisors is an integer number (954033157).

Almost surely, 2^5451618020 is an apocalyptic number.

It is an amenable number.

5451618020 is an abundant number, since it is smaller than the sum of its proper divisors (5996779864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5451618020 is a wasteful number, since it uses less digits than its factorization.

5451618020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272580910 (or 272580908 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 5451618020 is about 73835.0731021511. The cubic root of 5451618020 is about 1759.9829995775.

Adding to 5451618020 its reverse (208161545), we get a palindrome (5659779565).

The spelling of 5451618020 in words is "five billion, four hundred fifty-one million, six hundred eighteen thousand, twenty".