1326646766500 has 192 divisors, whose sum is σ = 3198396015360. Its totient is φ = 476697600000.

The previous prime is 1326646766461. The next prime is 1326646766503. The reversal of 1326646766500 is 56676466231.

It is not an unprimeable number, because it can be changed into a prime (1326646766503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 320521431 + ... + 320525569.

It is an arithmetic number, because the mean of its divisors is an integer number (16658312580).

Almost surely, 2^{1326646766500} is an apocalyptic number.

1326646766500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326646766500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599198007680).

1326646766500 is an abundant number, since it is smaller than the sum of its proper divisors (1871749248860).

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

1326646766500 is a wasteful number, since it uses less digits than its factorization.

1326646766500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 1326646766500 in words is "one trillion, three hundred twenty-six billion, six hundred forty-six million, seven hundred sixty-six thousand, five hundred".