409842065361 has 16 divisors (see below), whose sum is σ = 575315412800. Its totient is φ = 258803304768.

The previous prime is 409842065341. The next prime is 409842065371. The reversal of 409842065361 is 163560248904.

It is not a de Polignac number, because 409842065361 - 2¹⁹ = 409841541073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 409842065361.

It is not an unprimeable number, because it can be changed into a prime (409842065341) 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, 278026 + ... + 947091.

It is an arithmetic number, because the mean of its divisors is an integer number (35957213300).

Almost surely, 2^409842065361 is an apocalyptic number.

It is an amenable number.

409842065361 is a deficient number, since it is larger than the sum of its proper divisors (165473347439).

409842065361 is a wasteful number, since it uses less digits than its factorization.

409842065361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231008.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 409842065361 in words is "four hundred nine billion, eight hundred forty-two million, sixty-five thousand, three hundred sixty-one".