20351214157801 has 2 divisors, whose sum is σ = 20351214157802. Its totient is φ = 20351214157800.

The previous prime is 20351214157793. The next prime is 20351214157829. The reversal of 20351214157801 is 10875141215302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12090050555625 + 8261163602176 = 3477075^2 + 2874224^2 .

It is a cyclic number.

It is not a de Polignac number, because 20351214157801 - 2³ = 20351214157793 is a prime.

It is not a weakly prime, because it can be changed into another prime (20351214157831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175607078900 + 10175607078901.

It is an arithmetic number, because the mean of its divisors is an integer number (10175607078901).

Almost surely, 2^{20351214157801} is an apocalyptic number.

It is an amenable number.

20351214157801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20351214157801 is an equidigital number, since it uses as much as digits as its factorization.

20351214157801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 20351214157801 in words is "twenty trillion, three hundred fifty-one billion, two hundred fourteen million, one hundred fifty-seven thousand, eight hundred one".