20146645023277 has 2 divisors, whose sum is σ = 20146645023278. Its totient is φ = 20146645023276.

The previous prime is 20146645023229. The next prime is 20146645023283. The reversal of 20146645023277 is 77232054664102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19939493513956 + 207151509321 = 4465366^2 + 455139^2 .

It is a cyclic number.

It is not a de Polignac number, because 20146645023277 - 2³⁵ = 20112285284909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20146645023277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20146645023227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073322511638 + 10073322511639.

It is an arithmetic number, because the mean of its divisors is an integer number (10073322511639).

Almost surely, 2^{20146645023277} is an apocalyptic number.

It is an amenable number.

20146645023277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146645023277 is an equidigital number, since it uses as much as digits as its factorization.

20146645023277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 49.

Adding to 20146645023277 its reverse (77232054664102), we get a palindrome (97378699687379).

The spelling of 20146645023277 in words is "twenty trillion, one hundred forty-six billion, six hundred forty-five million, twenty-three thousand, two hundred seventy-seven".