61995008063 has 2 divisors, whose sum is σ = 61995008064. Its totient is φ = 61995008062.

The previous prime is 61995008003. The next prime is 61995008081. The reversal of 61995008063 is 36080059916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61995008063 - 2²⁶ = 61927899199 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 61995007999 and 61995008017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61995008003) 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, 30997504031 + 30997504032.

It is an arithmetic number, because the mean of its divisors is an integer number (30997504032).

Almost surely, 2^61995008063 is an apocalyptic number.

61995008063 is a deficient number, since it is larger than the sum of its proper divisors (1).

61995008063 is an equidigital number, since it uses as much as digits as its factorization.

61995008063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 61995008063 in words is "sixty-one billion, nine hundred ninety-five million, eight thousand, sixty-three".