61629292591 has 2 divisors, whose sum is σ = 61629292592. Its totient is φ = 61629292590.

The previous prime is 61629292589. The next prime is 61629292597. The reversal of 61629292591 is 19529292616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61629292591 - 2¹ = 61629292589 is a prime.

Together with 61629292589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61629292597) 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, 30814646295 + 30814646296.

It is an arithmetic number, because the mean of its divisors is an integer number (30814646296).

Almost surely, 2^61629292591 is an apocalyptic number.

61629292591 is a deficient number, since it is larger than the sum of its proper divisors (1).

61629292591 is an equidigital number, since it uses as much as digits as its factorization.

61629292591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 52.

The spelling of 61629292591 in words is "sixty-one billion, six hundred twenty-nine million, two hundred ninety-two thousand, five hundred ninety-one".