20523285670 has 16 divisors (see below), whose sum is σ = 38886225840. Its totient is φ = 7777245024.

The previous prime is 20523285647. The next prime is 20523285677. The reversal of 20523285670 is 7658232502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523285677) 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 7 ways as a sum of consecutive naturals, for example, 54008457 + ... + 54008836.

It is an arithmetic number, because the mean of its divisors is an integer number (2430389115).

Almost surely, 2^20523285670 is an apocalyptic number.

20523285670 is a deficient number, since it is larger than the sum of its proper divisors (18362940170).

20523285670 is a wasteful number, since it uses less digits than its factorization.

20523285670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108017319.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 20523285670 in words is "twenty billion, five hundred twenty-three million, two hundred eighty-five thousand, six hundred seventy".