1172427396109 has 16 divisors (see below), whose sum is σ = 1228923198720. Its totient is φ = 1117353277440.

The previous prime is 1172427396103. The next prime is 1172427396193. The reversal of 1172427396109 is 9016937242711.

It is a cyclic number.

It is not a de Polignac number, because 1172427396109 - 2¹⁹ = 1172426871821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172427396103) 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, 426157 + ... + 1589485.

It is an arithmetic number, because the mean of its divisors is an integer number (76807699920).

Almost surely, 2^{1172427396109} is an apocalyptic number.

It is an amenable number.

1172427396109 is a deficient number, since it is larger than the sum of its proper divisors (56495802611).

1172427396109 is a wasteful number, since it uses less digits than its factorization.

1172427396109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163940.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 1172427396109 in words is "one trillion, one hundred seventy-two billion, four hundred twenty-seven million, three hundred ninety-six thousand, one hundred nine".