409147603001801 has 4 divisors (see below), whose sum is σ = 420205646326212. Its totient is φ = 398089559677392.

The previous prime is 409147603001783. The next prime is 409147603001821. The reversal of 409147603001801 is 108100306741904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356630043391801 + 52517559610000 = 18884651^2 + 7246900^2 .

It is a cyclic number.

It is not a de Polignac number, because 409147603001801 - 2³⁸ = 408872725094857 is a prime.

It is a super-2 number, since 2×409147603001801² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409147603001821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5529021662150 + ... + 5529021662223.

It is an arithmetic number, because the mean of its divisors is an integer number (105051411581553).

Almost surely, 2^{409147603001801} is an apocalyptic number.

It is an amenable number.

409147603001801 is a deficient number, since it is larger than the sum of its proper divisors (11058043324411).

409147603001801 is a wasteful number, since it uses less digits than its factorization.

409147603001801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058043324410.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 409147603001801 in words is "four hundred nine trillion, one hundred forty-seven billion, six hundred three million, one thousand, eight hundred one".