20350352617501 has 2 divisors, whose sum is σ = 20350352617502. Its totient is φ = 20350352617500.

The previous prime is 20350352617499. The next prime is 20350352617531. The reversal of 20350352617501 is 10571625305302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20345963422500 + 4389195001 = 4510650^2 + 66251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20350352617501 - 2¹ = 20350352617499 is a prime.

It is a super-3 number, since 3×20350352617501³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 20350352617499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20350352617531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175176308750 + 10175176308751.

It is an arithmetic number, because the mean of its divisors is an integer number (10175176308751).

Almost surely, 2^{20350352617501} is an apocalyptic number.

It is an amenable number.

20350352617501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350352617501 is an equidigital number, since it uses as much as digits as its factorization.

20350352617501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 20350352617501 in words is "twenty trillion, three hundred fifty billion, three hundred fifty-two million, six hundred seventeen thousand, five hundred one".