1213840432017 has 6 divisors (see below), whose sum is σ = 1753325068482. Its totient is φ = 809226954672.

The previous prime is 1213840431863. The next prime is 1213840432093. The reversal of 1213840432017 is 7102340483121.

1213840432017 is a `hidden beast` number, since 1 + 213 + 8 + 4 + 0 + 432 + 0 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 930306546576 + 283533885441 = 964524^2 + 532479^2 .

It is not a de Polignac number, because 1213840432017 - 2⁸ = 1213840431761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213840432117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67435579548 + ... + 67435579565.

It is an arithmetic number, because the mean of its divisors is an integer number (292220844747).

Almost surely, 2^{1213840432017} is an apocalyptic number.

It is an amenable number.

1213840432017 is a deficient number, since it is larger than the sum of its proper divisors (539484636465).

1213840432017 is a wasteful number, since it uses less digits than its factorization.

1213840432017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134871159119 (or 134871159116 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 1213840432017 in words is "one trillion, two hundred thirteen billion, eight hundred forty million, four hundred thirty-two thousand, seventeen".