20336123156 has 12 divisors (see below), whose sum is σ = 36016989792. Its totient is φ = 10045554648.

The previous prime is 20336123153. The next prime is 20336123189. The reversal of 20336123156 is 65132163302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336123153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30626360 + ... + 30627023.

It is an arithmetic number, because the mean of its divisors is an integer number (3001415816).

Almost surely, 2^20336123156 is an apocalyptic number.

It is an amenable number.

20336123156 is a deficient number, since it is larger than the sum of its proper divisors (15680866636).

20336123156 is a wasteful number, since it uses less digits than its factorization.

20336123156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61253470 (or 61253468 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 20336123156 its reverse (65132163302), we get a palindrome (85468286458).

The spelling of 20336123156 in words is "twenty billion, three hundred thirty-six million, one hundred twenty-three thousand, one hundred fifty-six".