63867367121 has 2 divisors, whose sum is σ = 63867367122. Its totient is φ = 63867367120.

The previous prime is 63867366991. The next prime is 63867367171. The reversal of 63867367121 is 12176376836.

It is an a-pointer prime, because the next prime (63867367171) can be obtained adding 63867367121 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59297607121 + 4569760000 = 243511^2 + 67600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63867367121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63867367121.

It is not a weakly prime, because it can be changed into another prime (63867367171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31933683560 + 31933683561.

It is an arithmetic number, because the mean of its divisors is an integer number (31933683561).

Almost surely, 2^63867367121 is an apocalyptic number.

It is an amenable number.

63867367121 is a deficient number, since it is larger than the sum of its proper divisors (1).

63867367121 is an equidigital number, since it uses as much as digits as its factorization.

63867367121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 50.

The spelling of 63867367121 in words is "sixty-three billion, eight hundred sixty-seven million, three hundred sixty-seven thousand, one hundred twenty-one".