2001654544843 has 8 divisors (see below), whose sum is σ = 2029925802240. Its totient is φ = 1973385480360.

The previous prime is 2001654544831. The next prime is 2001654544853. The reversal of 2001654544843 is 3484454561002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001654544843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001654544793 and 2001654544802.

It is not an unprimeable number, because it can be changed into a prime (2001654544823) 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, 1335618 + ... + 2405656.

It is an arithmetic number, because the mean of its divisors is an integer number (253740725280).

Almost surely, 2^{2001654544843} is an apocalyptic number.

2001654544843 is a deficient number, since it is larger than the sum of its proper divisors (28271257397).

2001654544843 is a wasteful number, since it uses less digits than its factorization.

2001654544843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096457.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 2001654544843 in words is "two trillion, one billion, six hundred fifty-four million, five hundred forty-four thousand, eight hundred forty-three".