20042253654767 has 2 divisors, whose sum is σ = 20042253654768. Its totient is φ = 20042253654766.

The previous prime is 20042253654749. The next prime is 20042253654793. The reversal of 20042253654767 is 76745635224002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20042253654767 - 2³² = 20037958687471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042253654737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021126827383 + 10021126827384.

It is an arithmetic number, because the mean of its divisors is an integer number (10021126827384).

Almost surely, 2^{20042253654767} is an apocalyptic number.

20042253654767 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042253654767 is an equidigital number, since it uses as much as digits as its factorization.

20042253654767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16934400, while the sum is 53.

Adding to 20042253654767 its reverse (76745635224002), we get a palindrome (96787888878769).

The spelling of 20042253654767 in words is "twenty trillion, forty-two billion, two hundred fifty-three million, six hundred fifty-four thousand, seven hundred sixty-seven".