2154324210643 has 8 divisors (see below), whose sum is σ = 2379920878080. Its totient is φ = 1933685711880.

The previous prime is 2154324210631. The next prime is 2154324210691. The reversal of 2154324210643 is 3460124234512.

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 2154324210643 - 2¹³ = 2154324202451 is a prime.

It is a super-2 number, since 2×2154324210643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154324210613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239541255 + ... + 1239542992.

It is an arithmetic number, because the mean of its divisors is an integer number (297490109760).

Almost surely, 2^{2154324210643} is an apocalyptic number.

2154324210643 is a deficient number, since it is larger than the sum of its proper divisors (225596667437).

2154324210643 is a wasteful number, since it uses less digits than its factorization.

2154324210643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479084337.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 2154324210643 in words is "two trillion, one hundred fifty-four billion, three hundred twenty-four million, two hundred ten thousand, six hundred forty-three".