61624348837 has 2 divisors, whose sum is σ = 61624348838. Its totient is φ = 61624348836.

The previous prime is 61624348787. The next prime is 61624348843. The reversal of 61624348837 is 73884342616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61290409761 + 333939076 = 247569^2 + 18274^2 .

It is a cyclic number.

It is not a de Polignac number, because 61624348837 - 2¹¹ = 61624346789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61624348897) 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, 30812174418 + 30812174419.

It is an arithmetic number, because the mean of its divisors is an integer number (30812174419).

Almost surely, 2^61624348837 is an apocalyptic number.

It is an amenable number.

61624348837 is a deficient number, since it is larger than the sum of its proper divisors (1).

61624348837 is an equidigital number, since it uses as much as digits as its factorization.

61624348837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 52.

The spelling of 61624348837 in words is "sixty-one billion, six hundred twenty-four million, three hundred forty-eight thousand, eight hundred thirty-seven".