1329138412049 has 16 divisors (see below), whose sum is σ = 1550918949888. Its totient is φ = 1115537422032.

The previous prime is 1329138412039. The next prime is 1329138412061. The reversal of 1329138412049 is 9402148319231.

It is a cyclic number.

It is not a de Polignac number, because 1329138412049 - 2⁸ = 1329138411793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1329138411994 and 1329138412012.

It is not an unprimeable number, because it can be changed into a prime (1329138412039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8406659 + ... + 8563304.

It is an arithmetic number, because the mean of its divisors is an integer number (96932434368).

Almost surely, 2^{1329138412049} is an apocalyptic number.

It is an amenable number.

1329138412049 is a deficient number, since it is larger than the sum of its proper divisors (221780537839).

1329138412049 is a wasteful number, since it uses less digits than its factorization.

1329138412049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16970204.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 1329138412049 in words is "one trillion, three hundred twenty-nine billion, one hundred thirty-eight million, four hundred twelve thousand, forty-nine".