2041773663561 has 4 divisors (see below), whose sum is σ = 2722364884752.
Its totient is φ = 1361182442372.
The previous prime is 2041773663509. The next prime is 2041773663581. The reversal of 2041773663561 is 1653663771402.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 2041773663561 - 235 = 2007413925193 is a prime.
It is a super-2 number, since 2×20417736635612 (a number of 25 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (2041773663581) 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, 340295610591 + ... + 340295610596.
It is an arithmetic number, because the mean of its divisors is an integer number (680591221188).
Almost surely, 22041773663561 is an apocalyptic number.
It is an amenable number.
2041773663561 is a deficient number, since it is larger than the sum of its proper divisors (680591221191).
2041773663561 is an equidigital number, since it uses as much as digits as its factorization.
2041773663561 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 680591221190.
The product of its (nonzero) digits is 3810240, while the sum is 51.
The spelling of 2041773663561 in words is "two trillion, forty-one billion, seven hundred seventy-three million, six hundred sixty-three thousand, five hundred sixty-one".