20468827156 has 6 divisors (see below), whose sum is σ = 35820447530. Its totient is φ = 10234413576.

The previous prime is 20468827153. The next prime is 20468827187. The reversal of 20468827156 is 65172886402.

It can be written as a sum of positive squares in only one way, i.e., 10663866756 + 9804960400 = 103266^2 + 99020^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20468827153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2558603391 + ... + 2558603398.

Almost surely, 2^20468827156 is an apocalyptic number.

It is an amenable number.

20468827156 is a deficient number, since it is larger than the sum of its proper divisors (15351620374).

20468827156 is a wasteful number, since it uses less digits than its factorization.

20468827156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117206793 (or 5117206791 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 20468827156 in words is "twenty billion, four hundred sixty-eight million, eight hundred twenty-seven thousand, one hundred fifty-six".