4287906167021 has 2 divisors, whose sum is σ = 4287906167022. Its totient is φ = 4287906167020.

The previous prime is 4287906167003. The next prime is 4287906167081. The reversal of 4287906167021 is 1207616097824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4189140534121 + 98765632900 = 2046739^2 + 314270^2 .

It is a cyclic number.

It is not a de Polignac number, because 4287906167021 - 2¹⁴ = 4287906150637 is a prime.

It is a super-2 number, since 2×4287906167021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4287906167081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2143953083510 + 2143953083511.

It is an arithmetic number, because the mean of its divisors is an integer number (2143953083511).

Almost surely, 2^{4287906167021} is an apocalyptic number.

It is an amenable number.

4287906167021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4287906167021 is an equidigital number, since it uses as much as digits as its factorization.

4287906167021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 4287906167021 in words is "four trillion, two hundred eighty-seven billion, nine hundred six million, one hundred sixty-seven thousand, twenty-one".