1326426643530 has 72 divisors (see below), whose sum is σ = 3500951870052. Its totient is φ = 348434355456.

The previous prime is 1326426643501. The next prime is 1326426643537. The reversal of 1326426643530 is 353466246231.

1326426643530 is a `hidden beast` number, since 1 + 32 + 6 + 4 + 26 + 64 + 3 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1231480697841 + 94945945689 = 1109721^2 + 308133^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1326426643537) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1237567 + ... + 2045586.

Almost surely, 2^{1326426643530} is an apocalyptic number.

1326426643530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1326426643530 is an abundant number, since it is smaller than the sum of its proper divisors (2174525226522).

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

1326426643530 is a wasteful number, since it uses less digits than its factorization.

1326426643530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283300 (or 3283230 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 1326426643530 in words is "one trillion, three hundred twenty-six billion, four hundred twenty-six million, six hundred forty-three thousand, five hundred thirty".