11621403164 has 12 divisors (see below), whose sum is σ = 23242806384. Its totient is φ = 4980601344.

The previous prime is 11621403109. The next prime is 11621403203. The reversal of 11621403164 is 46130412611.

11621403164 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207525029 + ... + 207525084.

It is an arithmetic number, because the mean of its divisors is an integer number (1936900532).

Almost surely, 2^11621403164 is an apocalyptic number.

11621403164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11621403164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11621403164 is a wasteful number, since it uses less digits than its factorization.

11621403164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415050124 (or 415050122 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 11621403164 its reverse (46130412611), we get a palindrome (57751815775).

The spelling of 11621403164 in words is "eleven billion, six hundred twenty-one million, four hundred three thousand, one hundred sixty-four".