1327651650391 has 4 divisors (see below), whose sum is σ = 1448347254984. Its totient is φ = 1206956045800.

The previous prime is 1327651650359. The next prime is 1327651650401. The reversal of 1327651650391 is 1930561567231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1327651650391 - 2⁵ = 1327651650359 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327651650991) 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, 60347802280 + ... + 60347802301.

It is an arithmetic number, because the mean of its divisors is an integer number (362086813746).

Almost surely, 2^{1327651650391} is an apocalyptic number.

1327651650391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1327651650391 is a deficient number, since it is larger than the sum of its proper divisors (120695604593).

1327651650391 is a wasteful number, since it uses less digits than its factorization.

1327651650391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120695604592.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 1327651650391 in words is "one trillion, three hundred twenty-seven billion, six hundred fifty-one million, six hundred fifty thousand, three hundred ninety-one".