1121780426573 has 4 divisors (see below), whose sum is σ = 1121788904928. Its totient is φ = 1121771948220.

The previous prime is 1121780426549. The next prime is 1121780426579. The reversal of 1121780426573 is 3756240871211.

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 a de Polignac number, because none of the positive numbers 2^k-1121780426573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121780426579) 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, 4037513 + ... + 4306398.

It is an arithmetic number, because the mean of its divisors is an integer number (280447226232).

Almost surely, 2^{1121780426573} is an apocalyptic number.

It is an amenable number.

1121780426573 is a deficient number, since it is larger than the sum of its proper divisors (8478355).

1121780426573 is an equidigital number, since it uses as much as digits as its factorization.

1121780426573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478354.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 1121780426573 in words is "one trillion, one hundred twenty-one billion, seven hundred eighty million, four hundred twenty-six thousand, five hundred seventy-three".