1828775790721 has 8 divisors (see below), whose sum is σ = 2112382731744. Its totient is φ = 1564727949120.

The previous prime is 1828775790707. The next prime is 1828775790761. The reversal of 1828775790721 is 1270975778281.

It is a happy number.

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 1828775790721 - 2⁷ = 1828775790593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1828775790701) 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, 4889774655 + ... + 4889775028.

It is an arithmetic number, because the mean of its divisors is an integer number (264047841468).

Almost surely, 2^{1828775790721} is an apocalyptic number.

1828775790721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1828775790721 is a deficient number, since it is larger than the sum of its proper divisors (283606941023).

1828775790721 is a wasteful number, since it uses less digits than its factorization.

1828775790721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9779549711.

The product of its (nonzero) digits is 27659520, while the sum is 64.

The spelling of 1828775790721 in words is "one trillion, eight hundred twenty-eight billion, seven hundred seventy-five million, seven hundred ninety thousand, seven hundred twenty-one".