61000000063 has 2 divisors, whose sum is σ = 61000000064. Its totient is φ = 61000000062.

The previous prime is 61000000037. The next prime is 61000000067. The reversal of 61000000063 is 36000000016.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61000000063 - 2³³ = 52410065471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 60999999983 and 61000000046.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61000000067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500000031 + 30500000032.

It is an arithmetic number, because the mean of its divisors is an integer number (30500000032).

Almost surely, 2^61000000063 is an apocalyptic number.

61000000063 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000000063 is an equidigital number, since it uses as much as digits as its factorization.

61000000063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 61000000063 its reverse (36000000016), we get a palindrome (97000000079).

The spelling of 61000000063 in words is "sixty-one billion, sixty-three", and thus it is an aban number and an uban number.