1604640326250 has 80 divisors (see below), whose sum is σ = 4318803165600. Its totient is φ = 394988376000.

The previous prime is 1604640326213. The next prime is 1604640326269. The reversal of 1604640326250 is 526230464061.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 1604640326199 and 1604640326208.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 16409100 + ... + 16506599.

It is an arithmetic number, because the mean of its divisors is an integer number (53985039570).

Almost surely, 2^{1604640326250} is an apocalyptic number.

1604640326250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1604640326250 is an abundant number, since it is smaller than the sum of its proper divisors (2714162839350).

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

1604640326250 is a wasteful number, since it uses less digits than its factorization.

1604640326250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32915737 (or 32915722 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 1604640326250 in words is "one trillion, six hundred four billion, six hundred forty million, three hundred twenty-six thousand, two hundred fifty".