1597665090828 has 12 divisors (see below), whose sum is σ = 3727885211960. Its totient is φ = 532555030272.

The previous prime is 1597665090811. The next prime is 1597665090839. The reversal of 1597665090828 is 8280905667951.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66569378773 + ... + 66569378796.

Almost surely, 2^{1597665090828} is an apocalyptic number.

It is an amenable number.

1597665090828 is an abundant number, since it is smaller than the sum of its proper divisors (2130220121132).

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

1597665090828 is a wasteful number, since it uses less digits than its factorization.

1597665090828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133138757576 (or 133138757574 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 66.

The spelling of 1597665090828 in words is "one trillion, five hundred ninety-seven billion, six hundred sixty-five million, ninety thousand, eight hundred twenty-eight".