1597322696640 has 224 divisors, whose sum is σ = 5547633490944. Its totient is φ = 386173685760.

The previous prime is 1597322696603. The next prime is 1597322696701. The reversal of 1597322696640 is 466962237951.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3669442 + ... + 4081598.

Almost surely, 2^{1597322696640} is an apocalyptic number.

1597322696640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1597322696640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2773816745472).

1597322696640 is an abundant number, since it is smaller than the sum of its proper divisors (3950310794304).

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

1597322696640 is a wasteful number, since it uses less digits than its factorization.

1597322696640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412555 (or 412545 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 1597322696640 in words is "one trillion, five hundred ninety-seven billion, three hundred twenty-two million, six hundred ninety-six thousand, six hundred forty".