1145644721076 has 24 divisors (see below), whose sum is σ = 2673189902880. Its totient is φ = 381878875552.

The previous prime is 1145644721057. The next prime is 1145644721129. The reversal of 1145644721076 is 6701274465411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2188570 + ... + 2661038.

It is an arithmetic number, because the mean of its divisors is an integer number (111382912620).

Almost surely, 2^{1145644721076} is an apocalyptic number.

It is an amenable number.

1145644721076 is an abundant number, since it is smaller than the sum of its proper divisors (1527545181804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145644721076 is a wasteful number, since it uses less digits than its factorization.

1145644721076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674543 (or 674541 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 1145644721076 in words is "one trillion, one hundred forty-five billion, six hundred forty-four million, seven hundred twenty-one thousand, seventy-six".