1597423443840 has 192 divisors, whose sum is σ = 6304117678560. Its totient is φ = 365125349376.

The previous prime is 1597423443821. The next prime is 1597423443857. The reversal of 1597423443840 is 483443247951.

1597423443840 is a `hidden beast` number, since 1 + 59 + 74 + 2 + 3 + 443 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19768999 + ... + 19849638.

Almost surely, 2^{1597423443840} is an apocalyptic number.

1597423443840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597423443840 is an abundant number, since it is smaller than the sum of its proper divisors (4706694234720).

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

1597423443840 is a wasteful number, since it uses less digits than its factorization.

1597423443840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39618669 (or 39618654 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 1597423443840 in words is "one trillion, five hundred ninety-seven billion, four hundred twenty-three million, four hundred forty-three thousand, eight hundred forty".