61220335153 has 2 divisors, whose sum is σ = 61220335154. Its totient is φ = 61220335152.

The previous prime is 61220335097. The next prime is 61220335199. The reversal of 61220335153 is 35153302216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57397138929 + 3823196224 = 239577^2 + 61832^2 .

It is a cyclic number.

It is not a de Polignac number, because 61220335153 - 2¹³ = 61220326961 is a prime.

It is not a weakly prime, because it can be changed into another prime (61220335853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30610167576 + 30610167577.

It is an arithmetic number, because the mean of its divisors is an integer number (30610167577).

Almost surely, 2^61220335153 is an apocalyptic number.

It is an amenable number.

61220335153 is a deficient number, since it is larger than the sum of its proper divisors (1).

61220335153 is an equidigital number, since it uses as much as digits as its factorization.

61220335153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 61220335153 its reverse (35153302216), we get a palindrome (96373637369).

The spelling of 61220335153 in words is "sixty-one billion, two hundred twenty million, three hundred thirty-five thousand, one hundred fifty-three".