1005901365406 has 20 divisors (see below), whose sum is σ = 1760222660112. Its totient is φ = 431100583116.

The previous prime is 1005901365383. The next prime is 1005901365409. The reversal of 1005901365406 is 6045631095001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005901365409) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 104732950 + ... + 104742553.

Almost surely, 2^{1005901365406} is an apocalyptic number.

1005901365406 is a deficient number, since it is larger than the sum of its proper divisors (754321294706).

1005901365406 is an frugal number, since it uses more digits than its factorization.

1005901365406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209475533 (or 209475512 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 1005901365406 in words is "one trillion, five billion, nine hundred one million, three hundred sixty-five thousand, four hundred six".