63116355153581 has 2 divisors, whose sum is σ = 63116355153582. Its totient is φ = 63116355153580.

The previous prime is 63116355153403. The next prime is 63116355153601. The reversal of 63116355153581 is 18535155361136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40915851902500 + 22200503251081 = 6396550^2 + 4711741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63116355153581 is a prime.

It is a super-2 number, since 2×63116355153581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63116355123581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31558177576790 + 31558177576791.

It is an arithmetic number, because the mean of its divisors is an integer number (31558177576791).

Almost surely, 2^{63116355153581} is an apocalyptic number.

It is an amenable number.

63116355153581 is a deficient number, since it is larger than the sum of its proper divisors (1).

63116355153581 is an equidigital number, since it uses as much as digits as its factorization.

63116355153581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860000, while the sum is 53.

The spelling of 63116355153581 in words is "sixty-three trillion, one hundred sixteen billion, three hundred fifty-five million, one hundred fifty-three thousand, five hundred eighty-one".