61310550619 has 2 divisors, whose sum is σ = 61310550620. Its totient is φ = 61310550618.

The previous prime is 61310550617. The next prime is 61310550629. The reversal of 61310550619 is 91605501316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61310550619 - 2¹ = 61310550617 is a prime.

It is a super-2 number, since 2×61310550619² (a number of 22 digits) contains 22 as substring.

Together with 61310550617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61310550611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30655275309 + 30655275310.

It is an arithmetic number, because the mean of its divisors is an integer number (30655275310).

Almost surely, 2^61310550619 is an apocalyptic number.

61310550619 is a deficient number, since it is larger than the sum of its proper divisors (1).

61310550619 is an equidigital number, since it uses as much as digits as its factorization.

61310550619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 37.

The spelling of 61310550619 in words is "sixty-one billion, three hundred ten million, five hundred fifty thousand, six hundred nineteen".