2154521534143 has 8 divisors (see below), whose sum is σ = 2350429543296. Its totient is φ = 1958620594200.

The previous prime is 2154521534117. The next prime is 2154521534149. The reversal of 2154521534143 is 3414351254512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2154521534143 - 2⁵ = 2154521534111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2154521534096 and 2154521534105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154521534149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1119721 + ... + 2358562.

It is an arithmetic number, because the mean of its divisors is an integer number (293803692912).

Almost surely, 2^{2154521534143} is an apocalyptic number.

2154521534143 is a deficient number, since it is larger than the sum of its proper divisors (195908009153).

2154521534143 is a wasteful number, since it uses less digits than its factorization.

2154521534143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534605.

The product of its digits is 288000, while the sum is 40.

Adding to 2154521534143 its reverse (3414351254512), we get a palindrome (5568872788655).

The spelling of 2154521534143 in words is "two trillion, one hundred fifty-four billion, five hundred twenty-one million, five hundred thirty-four thousand, one hundred forty-three".