1791780285466 has 16 divisors (see below), whose sum is σ = 2715057828000. Its totient is φ = 886766086800.

The previous prime is 1791780285461. The next prime is 1791780285473. The reversal of 1791780285466 is 6645820871971.

It is a super-4 number, since 4×1791780285466⁴ (a number of 50 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1791780285398 and 1791780285407.

It is not an unprimeable number, because it can be changed into a prime (1791780285461) 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, 560736 + ... + 1974331.

It is an arithmetic number, because the mean of its divisors is an integer number (169691114250).

Almost surely, 2^{1791780285466} is an apocalyptic number.

1791780285466 is a deficient number, since it is larger than the sum of its proper divisors (923277542534).

1791780285466 is a wasteful number, since it uses less digits than its factorization.

1791780285466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538669.

The product of its (nonzero) digits is 40642560, while the sum is 64.

The spelling of 1791780285466 in words is "one trillion, seven hundred ninety-one billion, seven hundred eighty million, two hundred eighty-five thousand, four hundred sixty-six".