20016233307256 has 32 divisors (see below), whose sum is σ = 38072300472000. Its totient is φ = 9864065143296.

The previous prime is 20016233307209. The next prime is 20016233307263. The reversal of 20016233307256 is 65270333261002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27471021 + ... + 28190236.

It is an arithmetic number, because the mean of its divisors is an integer number (1189759389750).

Almost surely, 2^{20016233307256} is an apocalyptic number.

It is an amenable number.

20016233307256 is a deficient number, since it is larger than the sum of its proper divisors (18056067164744).

20016233307256 is a wasteful number, since it uses less digits than its factorization.

20016233307256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55661911 (or 55661907 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 40.

Adding to 20016233307256 its reverse (65270333261002), we get a palindrome (85286566568258).

The spelling of 20016233307256 in words is "twenty trillion, sixteen billion, two hundred thirty-three million, three hundred seven thousand, two hundred fifty-six".