11353421646 has 64 divisors (see below), whose sum is σ = 28845135360. Its totient is φ = 3242592000.

The previous prime is 11353421609. The next prime is 11353421647. The reversal of 11353421646 is 64612435311.

11353421646 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 3 + 4 + 2 + 1 + 646 = 666.

It is a super-2 number, since 2×11353421646² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11353421646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11353421647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1508625 + ... + 1516131.

It is an arithmetic number, because the mean of its divisors is an integer number (450705240).

Almost surely, 2^11353421646 is an apocalyptic number.

11353421646 is an abundant number, since it is smaller than the sum of its proper divisors (17491713714).

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

11353421646 is a wasteful number, since it uses less digits than its factorization.

11353421646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526 (or 11520 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 11353421646 its reverse (64612435311), we get a palindrome (75965856957).

The spelling of 11353421646 in words is "eleven billion, three hundred fifty-three million, four hundred twenty-one thousand, six hundred forty-six".