11423451420 has 36 divisors (see below), whose sum is σ = 34651136520. Its totient is φ = 3046253664.

The previous prime is 11423451419. The next prime is 11423451421. The reversal of 11423451420 is 2415432411.

11423451420 is a `hidden beast` number, since 1 + 1 + 4 + 234 + 5 + 1 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (11423451419) and next prime (11423451421).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423451421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31731630 + ... + 31731989.

It is an arithmetic number, because the mean of its divisors is an integer number (962531570).

Almost surely, 2^11423451420 is an apocalyptic number.

11423451420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11423451420 is an abundant number, since it is smaller than the sum of its proper divisors (23227685100).

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

11423451420 is a wasteful number, since it uses less digits than its factorization.

11423451420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63463634 (or 63463629 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 11423451420 its reverse (2415432411), we get a palindrome (13838883831).

The spelling of 11423451420 in words is "eleven billion, four hundred twenty-three million, four hundred fifty-one thousand, four hundred twenty".