20315121356050 has 12 divisors (see below), whose sum is σ = 37786125722346. Its totient is φ = 8126048542400.

The previous prime is 20315121356041. The next prime is 20315121356077. The reversal of 20315121356050 is 5065312151302.

It can be written as a sum of positive squares in 3 ways, for example, as 7710768187929 + 12604353168121 = 2776827^2 + 3550261^2 .

It is a super-2 number, since 2×20315121356050² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20315121355997 and 20315121356015.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203151213511 + ... + 203151213610.

Almost surely, 2^{20315121356050} is an apocalyptic number.

20315121356050 is a deficient number, since it is larger than the sum of its proper divisors (17471004366296).

20315121356050 is a wasteful number, since it uses less digits than its factorization.

20315121356050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406302427133 (or 406302427128 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 20315121356050 in words is "twenty trillion, three hundred fifteen billion, one hundred twenty-one million, three hundred fifty-six thousand, fifty".