1327401687729 has 32 divisors (see below), whose sum is σ = 1911602488320. Its totient is φ = 814470340608.

The previous prime is 1327401687719. The next prime is 1327401687811. The reversal of 1327401687729 is 9277861047231.

It is not a de Polignac number, because 1327401687729 - 2¹³ = 1327401679537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1327401687709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19116177 + ... + 19185489.

It is an arithmetic number, because the mean of its divisors is an integer number (59737577760).

Almost surely, 2^{1327401687729} is an apocalyptic number.

It is an amenable number.

1327401687729 is a deficient number, since it is larger than the sum of its proper divisors (584200800591).

1327401687729 is a wasteful number, since it uses less digits than its factorization.

1327401687729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70761.

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 1327401687729 in words is "one trillion, three hundred twenty-seven billion, four hundred one million, six hundred eighty-seven thousand, seven hundred twenty-nine".