4201972566787 has 2 divisors, whose sum is σ = 4201972566788. Its totient is φ = 4201972566786.

The previous prime is 4201972566761. The next prime is 4201972566851. The reversal of 4201972566787 is 7876652791024.

It is an a-pointer prime, because the next prime (4201972566851) can be obtained adding 4201972566787 to its sum of digits (64).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4201972566787 is a prime.

It is not a weakly prime, because it can be changed into another prime (4201972566487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100986283393 + 2100986283394.

It is an arithmetic number, because the mean of its divisors is an integer number (2100986283394).

Almost surely, 2^{4201972566787} is an apocalyptic number.

4201972566787 is a deficient number, since it is larger than the sum of its proper divisors (1).

4201972566787 is an equidigital number, since it uses as much as digits as its factorization.

4201972566787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 4201972566787 in words is "four trillion, two hundred one billion, nine hundred seventy-two million, five hundred sixty-six thousand, seven hundred eighty-seven".