20604523654 has 16 divisors (see below), whose sum is σ = 36310070160. Its totient is φ = 8645254560.

The previous prime is 20604523631. The next prime is 20604523661. The reversal of 20604523654 is 45632540602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36021609 + ... + 36022180.

It is an arithmetic number, because the mean of its divisors is an integer number (2269379385).

Almost surely, 2^20604523654 is an apocalyptic number.

20604523654 is a deficient number, since it is larger than the sum of its proper divisors (15705546506).

20604523654 is a wasteful number, since it uses less digits than its factorization.

20604523654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72043815.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 20604523654 in words is "twenty billion, six hundred four million, five hundred twenty-three thousand, six hundred fifty-four".