1611204311406 has 16 divisors (see below), whose sum is σ = 3326357288448. Its totient is φ = 519743326200.

The previous prime is 1611204311393. The next prime is 1611204311467. The reversal of 1611204311406 is 6041134021161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4331194200 + ... + 4331194571.

It is an arithmetic number, because the mean of its divisors is an integer number (207897330528).

Almost surely, 2^{1611204311406} is an apocalyptic number.

1611204311406 is an abundant number, since it is smaller than the sum of its proper divisors (1715152977042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1611204311406 is a wasteful number, since it uses less digits than its factorization.

1611204311406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662388807.

The product of its (nonzero) digits is 3456, while the sum is 30.

Adding to 1611204311406 its reverse (6041134021161), we get a palindrome (7652338332567).

The spelling of 1611204311406 in words is "one trillion, six hundred eleven billion, two hundred four million, three hundred eleven thousand, four hundred six".