20013123656151 has 12 divisors (see below), whose sum is σ = 30164708119728. Its totient is φ = 12761991896544.

The previous prime is 20013123656087. The next prime is 20013123656159. The reversal of 20013123656151 is 15165632131002.

20013123656151 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 3 + 1 + 2 + 36 + 5 + 615 + 1 = 666.

It is not a de Polignac number, because 20013123656151 - 2⁶ = 20013123656087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013123656159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48340878190 + ... + 48340878603.

It is an arithmetic number, because the mean of its divisors is an integer number (2513725676644).

Almost surely, 2^{20013123656151} is an apocalyptic number.

20013123656151 is a deficient number, since it is larger than the sum of its proper divisors (10151584463577).

20013123656151 is a wasteful number, since it uses less digits than its factorization.

20013123656151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96681756822 (or 96681756819 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 20013123656151 its reverse (15165632131002), we get a palindrome (35178755787153).

The spelling of 20013123656151 in words is "twenty trillion, thirteen billion, one hundred twenty-three million, six hundred fifty-six thousand, one hundred fifty-one".