1654643422443 has 32 divisors (see below), whose sum is σ = 2459867864832. Its totient is φ = 980922704000.

The previous prime is 1654643422381. The next prime is 1654643422457. The reversal of 1654643422443 is 3442243464561.

It is a cyclic number.

It is not a de Polignac number, because 1654643422443 - 2³⁷ = 1517204468971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1654643422392 and 1654643422401.

It is not an unprimeable number, because it can be changed into a prime (1654643422343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2713980 + ... + 3267257.

It is an arithmetic number, because the mean of its divisors is an integer number (76870870776).

Almost surely, 2^{1654643422443} is an apocalyptic number.

1654643422443 is a deficient number, since it is larger than the sum of its proper divisors (805224442389).

1654643422443 is a wasteful number, since it uses less digits than its factorization.

1654643422443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981435.

The product of its digits is 6635520, while the sum is 48.

The spelling of 1654643422443 in words is "one trillion, six hundred fifty-four billion, six hundred forty-three million, four hundred twenty-two thousand, four hundred forty-three".