1243133793766 has 16 divisors (see below), whose sum is σ = 1868895212256. Its totient is φ = 620168890176.

The previous prime is 1243133793739. The next prime is 1243133793817. The reversal of 1243133793766 is 6673973313421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20440495 + ... + 20501221.

It is an arithmetic number, because the mean of its divisors is an integer number (116805950766).

Almost surely, 2^{1243133793766} is an apocalyptic number.

1243133793766 is a deficient number, since it is larger than the sum of its proper divisors (625761418490).

1243133793766 is a wasteful number, since it uses less digits than its factorization.

1243133793766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83583.

The product of its digits is 10287648, while the sum is 55.

The spelling of 1243133793766 in words is "one trillion, two hundred forty-three billion, one hundred thirty-three million, seven hundred ninety-three thousand, seven hundred sixty-six".