1780260421696 has 21 divisors (see below), whose sum is σ = 3532725455871. Its totient is φ = 890124873792.

The previous prime is 1780260421673. The next prime is 1780260421729. The reversal of 1780260421696 is 6961240620871.

The square root of 1780260421696 is 1334264.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10590721 + ... + 10757503.

Almost surely, 2^{1780260421696} is an apocalyptic number.

1780260421696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1780260421696 is the 1334264-th square number.

It is an amenable number.

1780260421696 is a deficient number, since it is larger than the sum of its proper divisors (1752465034175).

1780260421696 is an frugal number, since it uses more digits than its factorization.

1780260421696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333578 (or 166785 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 1780260421696 in words is "one trillion, seven hundred eighty billion, two hundred sixty million, four hundred twenty-one thousand, six hundred ninety-six".