1192786642081 has 4 divisors (see below), whose sum is σ = 1225024118932. Its totient is φ = 1160549165232.

The previous prime is 1192786642051. The next prime is 1192786642109. The reversal of 1192786642081 is 1802466872911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 716570715025 + 476215927056 = 846505^2 + 690084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1192786642081 - 2⁵ = 1192786642049 is a prime.

It is a super-2 number, since 2×1192786642081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1192786642051) 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, 16118738370 + ... + 16118738443.

It is an arithmetic number, because the mean of its divisors is an integer number (306256029733).

Almost surely, 2^{1192786642081} is an apocalyptic number.

It is an amenable number.

1192786642081 is a deficient number, since it is larger than the sum of its proper divisors (32237476851).

1192786642081 is an equidigital number, since it uses as much as digits as its factorization.

1192786642081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32237476850.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 1192786642081 in words is "one trillion, one hundred ninety-two billion, seven hundred eighty-six million, six hundred forty-two thousand, eighty-one".