1311045163136 has 64 divisors (see below), whose sum is σ = 2761859842560. Its totient is φ = 618904012800.

The previous prime is 1311045163117. The next prime is 1311045163261. The reversal of 1311045163136 is 6313615401131.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1311045163096 and 1311045163105.

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, 3866636 + ... + 4192011.

It is an arithmetic number, because the mean of its divisors is an integer number (43154060040).

Almost surely, 2^{1311045163136} is an apocalyptic number.

1311045163136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311045163136 is an abundant number, since it is smaller than the sum of its proper divisors (1450814679424).

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

1311045163136 is an equidigital number, since it uses as much as digits as its factorization.

1311045163136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8058733 (or 8058721 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 1311045163136 in words is "one trillion, three hundred eleven billion, forty-five million, one hundred sixty-three thousand, one hundred thirty-six".