1604779525397 has 16 divisors (see below), whose sum is σ = 1647759708672. Its totient is φ = 1562058555120.

The previous prime is 1604779525373. The next prime is 1604779525411. The reversal of 1604779525397 is 7935259774061.

It is a cyclic number.

It is not a de Polignac number, because 1604779525397 - 2³⁴ = 1587599656213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604779522397) 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, 109706198 + ... + 109720824.

It is an arithmetic number, because the mean of its divisors is an integer number (102984981792).

Almost surely, 2^{1604779525397} is an apocalyptic number.

It is an amenable number.

1604779525397 is a deficient number, since it is larger than the sum of its proper divisors (42980183275).

1604779525397 is a wasteful number, since it uses less digits than its factorization.

1604779525397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288.

The product of its (nonzero) digits is 100018800, while the sum is 65.

The spelling of 1604779525397 in words is "one trillion, six hundred four billion, seven hundred seventy-nine million, five hundred twenty-five thousand, three hundred ninety-seven".