207839244881 has 2 divisors, whose sum is σ = 207839244882. Its totient is φ = 207839244880.

The previous prime is 207839244869. The next prime is 207839244887. The reversal of 207839244881 is 188442938702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130100883025 + 77738361856 = 360695^2 + 278816^2 .

It is a cyclic number.

It is not a de Polignac number, because 207839244881 - 2⁶ = 207839244817 is a prime.

It is a super-2 number, since 2×207839244881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (207839244887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103919622440 + 103919622441.

It is an arithmetic number, because the mean of its divisors is an integer number (103919622441).

Almost surely, 2^207839244881 is an apocalyptic number.

It is an amenable number.

207839244881 is a deficient number, since it is larger than the sum of its proper divisors (1).

207839244881 is an equidigital number, since it uses as much as digits as its factorization.

207839244881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 207839244881 in words is "two hundred seven billion, eight hundred thirty-nine million, two hundred forty-four thousand, eight hundred eighty-one".