1328215627497 has 24 divisors (see below), whose sum is σ = 1958242281408. Its totient is φ = 800158897120.

The previous prime is 1328215627471. The next prime is 1328215627499. The reversal of 1328215627497 is 7947265128231.

It is not a de Polignac number, because 1328215627497 - 2⁸ = 1328215627241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1328215627499) 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 23 ways as a sum of consecutive naturals, for example, 10894458 + ... + 11015699.

It is an arithmetic number, because the mean of its divisors is an integer number (81593428392).

Almost surely, 2^{1328215627497} is an apocalyptic number.

It is an amenable number.

1328215627497 is a deficient number, since it is larger than the sum of its proper divisors (630026653911).

1328215627497 is a wasteful number, since it uses less digits than its factorization.

1328215627497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21910349 (or 21910338 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The spelling of 1328215627497 in words is "one trillion, three hundred twenty-eight billion, two hundred fifteen million, six hundred twenty-seven thousand, four hundred ninety-seven".