2154454351020 has 144 divisors (see below), whose sum is σ = 6610706470368. Its totient is φ = 567915479040.

The previous prime is 2154454351013. The next prime is 2154454351109. The reversal of 2154454351020 is 201534544512.

2154454351020 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 4 + 543 + 5 + 102 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5882302 + ... + 6237818.

It is an arithmetic number, because the mean of its divisors is an integer number (45907683822).

Almost surely, 2^{2154454351020} is an apocalyptic number.

2154454351020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154454351020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3305353235184).

2154454351020 is an abundant number, since it is smaller than the sum of its proper divisors (4456252119348).

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

2154454351020 is a wasteful number, since it uses less digits than its factorization.

2154454351020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355920 (or 355915 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 2154454351020 its reverse (201534544512), we get a palindrome (2355988895532).

The spelling of 2154454351020 in words is "two trillion, one hundred fifty-four billion, four hundred fifty-four million, three hundred fifty-one thousand, twenty".