11451326266420 has 12 divisors (see below), whose sum is σ = 24047785159524. Its totient is φ = 4580530506560.

The previous prime is 11451326266409. The next prime is 11451326266423. The reversal of 11451326266420 is 2466262315411.

It can be written as a sum of positive squares in 2 ways, for example, as 6463045231504 + 4988281034916 = 2542252^2 + 2233446^2 .

It is a super-2 number, since 2×11451326266420² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451326266423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286283156641 + ... + 286283156680.

It is an arithmetic number, because the mean of its divisors is an integer number (2003982096627).

Almost surely, 2^{11451326266420} is an apocalyptic number.

11451326266420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11451326266420 is an abundant number, since it is smaller than the sum of its proper divisors (12596458893104).

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

11451326266420 is a wasteful number, since it uses less digits than its factorization.

11451326266420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572566313330 (or 572566313328 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 11451326266420 in words is "eleven trillion, four hundred fifty-one billion, three hundred twenty-six million, two hundred sixty-six thousand, four hundred twenty".