13224266640 has 120 divisors (see below), whose sum is σ = 47827798200. Its totient is φ = 3255201792.

The previous prime is 13224266617. The next prime is 13224266641. The reversal of 13224266640 is 4666242231.

It can be written as a sum of positive squares in 4 ways, for example, as 1991658384 + 11232608256 = 44628^2 + 105984^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13224266595 and 13224266604.

It is not an unprimeable number, because it can be changed into a prime (13224266641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 697065 + ... + 715784.

It is an arithmetic number, because the mean of its divisors is an integer number (398564985).

Almost surely, 2^13224266640 is an apocalyptic number.

13224266640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13224266640 is an abundant number, since it is smaller than the sum of its proper divisors (34603531560).

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

13224266640 is a wasteful number, since it uses less digits than its factorization.

13224266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412881 (or 1412872 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 13224266640 in words is "thirteen billion, two hundred twenty-four million, two hundred sixty-six thousand, six hundred forty".