1781996795276 has 24 divisors (see below), whose sum is σ = 3202837982736. Its totient is φ = 866901130560.

The previous prime is 1781996795269. The next prime is 1781996795309. The reversal of 1781996795276 is 6725976991871.

It is a junction number, because it is equal to n+sod(n) for n = 1781996795197 and 1781996795206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12803975 + ... + 12942401.

It is an arithmetic number, because the mean of its divisors is an integer number (133451582614).

Almost surely, 2^{1781996795276} is an apocalyptic number.

It is an amenable number.

1781996795276 is a deficient number, since it is larger than the sum of its proper divisors (1420841187460).

1781996795276 is a wasteful number, since it uses less digits than its factorization.

1781996795276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225449 (or 225447 counting only the distinct ones).

The product of its digits is 720135360, while the sum is 77.

The spelling of 1781996795276 in words is "one trillion, seven hundred eighty-one billion, nine hundred ninety-six million, seven hundred ninety-five thousand, two hundred seventy-six".