2044775777999 has 8 divisors (see below), whose sum is σ = 2088794554560. Its totient is φ = 2000778372736.

The previous prime is 2044775777983. The next prime is 2044775778011. The reversal of 2044775777999 is 9997775774402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2044775777999 - 2⁴ = 2044775777983 is a prime.

It is a super-2 number, since 2×2044775777999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044775777399) 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, 5149334 + ... + 5532195.

It is an arithmetic number, because the mean of its divisors is an integer number (261099319320).

Almost surely, 2^{2044775777999} is an apocalyptic number.

2044775777999 is a deficient number, since it is larger than the sum of its proper divisors (44018776561).

2044775777999 is a wasteful number, since it uses less digits than its factorization.

2044775777999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685649.

The product of its (nonzero) digits is 1960368480, while the sum is 77.

The spelling of 2044775777999 in words is "two trillion, forty-four billion, seven hundred seventy-five million, seven hundred seventy-seven thousand, nine hundred ninety-nine".