1128645421583 has 8 divisors (see below), whose sum is σ = 1133615484480. Its totient is φ = 1123675719840.

The previous prime is 1128645421493. The next prime is 1128645421591. The reversal of 1128645421583 is 3851245468211.

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 1128645421583 - 2¹⁰ = 1128645420559 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 (1128345421583) 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, 7616666 + ... + 7763432.

It is an arithmetic number, because the mean of its divisors is an integer number (141701935560).

Almost surely, 2^{1128645421583} is an apocalyptic number.

1128645421583 is a deficient number, since it is larger than the sum of its proper divisors (4970062897).

1128645421583 is a wasteful number, since it uses less digits than its factorization.

1128645421583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180577.

The product of its digits is 1843200, while the sum is 50.

The spelling of 1128645421583 in words is "one trillion, one hundred twenty-eight billion, six hundred forty-five million, four hundred twenty-one thousand, five hundred eighty-three".