1604134625655 has 16 divisors (see below), whose sum is σ = 2567214760320. Its totient is φ = 855338680608.

The previous prime is 1604134625617. The next prime is 1604134625663. The reversal of 1604134625655 is 5565264314061.

It is a happy number.

It is not a de Polignac number, because 1604134625655 - 2¹² = 1604134621559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12420265 + ... + 12548754.

It is an arithmetic number, because the mean of its divisors is an integer number (160450922520).

Almost surely, 2^{1604134625655} is an apocalyptic number.

1604134625655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1604134625655 is a deficient number, since it is larger than the sum of its proper divisors (963080134665).

1604134625655 is a wasteful number, since it uses less digits than its factorization.

1604134625655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24973310.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 1604134625655 in words is "one trillion, six hundred four billion, one hundred thirty-four million, six hundred twenty-five thousand, six hundred fifty-five".