20616023558 has 48 divisors (see below), whose sum is σ = 34829848368. Its totient is φ = 9096292800.

The previous prime is 20616023537. The next prime is 20616023567. The reversal of 20616023558 is 85532061602.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2068868 + ... + 2078808.

It is an arithmetic number, because the mean of its divisors is an integer number (725621841).

Almost surely, 2^20616023558 is an apocalyptic number.

20616023558 is a deficient number, since it is larger than the sum of its proper divisors (14213824810).

20616023558 is a wasteful number, since it uses less digits than its factorization.

20616023558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101 (or 10070 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 20616023558 in words is "twenty billion, six hundred sixteen million, twenty-three thousand, five hundred fifty-eight".