20352320431951 has 2 divisors, whose sum is σ = 20352320431952. Its totient is φ = 20352320431950.

The previous prime is 20352320431939. The next prime is 20352320431981. The reversal of 20352320431951 is 15913402325302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20352320431951 - 2⁹ = 20352320431439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20352320431981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176160215975 + 10176160215976.

It is an arithmetic number, because the mean of its divisors is an integer number (10176160215976).

Almost surely, 2^{20352320431951} is an apocalyptic number.

20352320431951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20352320431951 is an equidigital number, since it uses as much as digits as its factorization.

20352320431951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 20352320431951 in words is "twenty trillion, three hundred fifty-two billion, three hundred twenty million, four hundred thirty-one thousand, nine hundred fifty-one".