20604405345575 has 12 divisors (see below), whose sum is σ = 25651253324088. Its totient is φ = 16417852860000.

The previous prime is 20604405345551. The next prime is 20604405345611. The reversal of 20604405345575 is 57554350440602.

It is not a de Polignac number, because 20604405345575 - 2²⁶ = 20604338236711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1641779012 + ... + 1641791561.

It is an arithmetic number, because the mean of its divisors is an integer number (2137604443674).

Almost surely, 2^{20604405345575} is an apocalyptic number.

20604405345575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20604405345575 is a deficient number, since it is larger than the sum of its proper divisors (5046847978513).

20604405345575 is a wasteful number, since it uses less digits than its factorization.

20604405345575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283570834 (or 3283570829 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 50.

The spelling of 20604405345575 in words is "twenty trillion, six hundred four billion, four hundred five million, three hundred forty-five thousand, five hundred seventy-five".