1326500630040 has 64 divisors (see below), whose sum is σ = 3979750982400. Its totient is φ = 353711359872.

The previous prime is 1326500630033. The next prime is 1326500630047. The reversal of 1326500630040 is 400360056231.

It is an interprime number because it is at equal distance from previous prime (1326500630033) and next prime (1326500630047).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326500630047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1625781 + ... + 2301339.

It is an arithmetic number, because the mean of its divisors is an integer number (62183609100).

Almost surely, 2^{1326500630040} is an apocalyptic number.

1326500630040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326500630040 is an abundant number, since it is smaller than the sum of its proper divisors (2653250352360).

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

1326500630040 is a wasteful number, since it uses less digits than its factorization.

1326500630040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691936 (or 691932 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 1326500630040 its reverse (400360056231), we get a palindrome (1726860686271).

The spelling of 1326500630040 in words is "one trillion, three hundred twenty-six billion, five hundred million, six hundred thirty thousand, forty".