278223201013 has 2 divisors, whose sum is σ = 278223201014. Its totient is φ = 278223201012.

The previous prime is 278223200987. The next prime is 278223201029. The reversal of 278223201013 is 310102322872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194284363729 + 83938837284 = 440777^2 + 289722^2 .

It is a cyclic number.

It is not a de Polignac number, because 278223201013 - 2²⁹ = 277686330101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278223001013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139111600506 + 139111600507.

It is an arithmetic number, because the mean of its divisors is an integer number (139111600507).

Almost surely, 2^278223201013 is an apocalyptic number.

It is an amenable number.

278223201013 is a deficient number, since it is larger than the sum of its proper divisors (1).

278223201013 is an equidigital number, since it uses as much as digits as its factorization.

278223201013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 278223201013 its reverse (310102322872), we get a palindrome (588325523885).

The spelling of 278223201013 in words is "two hundred seventy-eight billion, two hundred twenty-three million, two hundred one thousand, thirteen".