1601322372320 has 96 divisors (see below), whose sum is σ = 4306481303040. Its totient is φ = 556981680640.

The previous prime is 1601322372281. The next prime is 1601322372329. The reversal of 1601322372320 is 232732231061.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601322372329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19738700 + ... + 19819659.

It is an arithmetic number, because the mean of its divisors is an integer number (44859180240).

Almost surely, 2^{1601322372320} is an apocalyptic number.

1601322372320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601322372320 is an abundant number, since it is smaller than the sum of its proper divisors (2705158930720).

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

1601322372320 is a wasteful number, since it uses less digits than its factorization.

1601322372320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39558408 (or 39558400 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 1601322372320 in words is "one trillion, six hundred one billion, three hundred twenty-two million, three hundred seventy-two thousand, three hundred twenty".