1326639880747 has 2 divisors, whose sum is σ = 1326639880748. Its totient is φ = 1326639880746.

The previous prime is 1326639880739. The next prime is 1326639880763. The reversal of 1326639880747 is 7470889366231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1326639880747 - 2³ = 1326639880739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326639883747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663319940373 + 663319940374.

It is an arithmetic number, because the mean of its divisors is an integer number (663319940374).

Almost surely, 2^{1326639880747} is an apocalyptic number.

1326639880747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326639880747 is an equidigital number, since it uses as much as digits as its factorization.

1326639880747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73156608, while the sum is 64.

The spelling of 1326639880747 in words is "one trillion, three hundred twenty-six billion, six hundred thirty-nine million, eight hundred eighty thousand, seven hundred forty-seven".