1940066056999 has 4 divisors (see below), whose sum is σ = 2217218350864. Its totient is φ = 1662913763136.

The previous prime is 1940066056993. The next prime is 1940066057029. The reversal of 1940066056999 is 9996506600491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1940066056999 - 2¹⁹ = 1940065532711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1940066056999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940066056993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138576146922 + ... + 138576146935.

It is an arithmetic number, because the mean of its divisors is an integer number (554304587716).

Almost surely, 2^{1940066056999} is an apocalyptic number.

1940066056999 is a deficient number, since it is larger than the sum of its proper divisors (277152293865).

1940066056999 is an equidigital number, since it uses as much as digits as its factorization.

1940066056999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277152293864.

The product of its (nonzero) digits is 28343520, while the sum is 64.

The spelling of 1940066056999 in words is "one trillion, nine hundred forty billion, sixty-six million, fifty-six thousand, nine hundred ninety-nine".