63440718053 has 2 divisors, whose sum is σ = 63440718054. Its totient is φ = 63440718052.

The previous prime is 63440718023. The next prime is 63440718071. The reversal of 63440718053 is 35081704436.

63440718053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46814678689 + 16626039364 = 216367^2 + 128942^2 .

It is a cyclic number.

It is not a de Polignac number, because 63440718053 - 2¹⁴ = 63440701669 is a prime.

It is a super-2 number, since 2×63440718053² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63440718053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63440718023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31720359026 + 31720359027.

It is an arithmetic number, because the mean of its divisors is an integer number (31720359027).

Almost surely, 2^63440718053 is an apocalyptic number.

It is an amenable number.

63440718053 is a deficient number, since it is larger than the sum of its proper divisors (1).

63440718053 is an equidigital number, since it uses as much as digits as its factorization.

63440718053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 63440718053 in words is "sixty-three billion, four hundred forty million, seven hundred eighteen thousand, fifty-three".