11344551420 has 48 divisors (see below), whose sum is σ = 32364087840. Its totient is φ = 2968133376.

The previous prime is 11344551419. The next prime is 11344551451. The reversal of 11344551420 is 2415544311.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1780555 + ... + 1786914.

It is an arithmetic number, because the mean of its divisors is an integer number (674251830).

Almost surely, 2^11344551420 is an apocalyptic number.

11344551420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11344551420 is an abundant number, since it is smaller than the sum of its proper divisors (21019536420).

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

11344551420 is a wasteful number, since it uses less digits than its factorization.

11344551420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567534 (or 3567532 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

It can be divided in two parts, 1134 and 4551420, that added together give a palindrome (4552554).

The spelling of 11344551420 in words is "eleven billion, three hundred forty-four million, five hundred fifty-one thousand, four hundred twenty".