1779816895740 has 144 divisors (see below), whose sum is σ = 6120072285600. Its totient is φ = 415050407424.

The previous prime is 1779816895723. The next prime is 1779816895783. The reversal of 1779816895740 is 475986189771.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19971475 + ... + 20060394.

Almost surely, 2^{1779816895740} is an apocalyptic number.

1779816895740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1779816895740 is an abundant number, since it is smaller than the sum of its proper divisors (4340255389860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1779816895740 is a wasteful number, since it uses less digits than its factorization.

1779816895740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40031916 (or 40031911 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 72.

The spelling of 1779816895740 in words is "one trillion, seven hundred seventy-nine billion, eight hundred sixteen million, eight hundred ninety-five thousand, seven hundred forty".