61544336233 has 2 divisors, whose sum is σ = 61544336234. Its totient is φ = 61544336232.

The previous prime is 61544336201. The next prime is 61544336279. The reversal of 61544336233 is 33263344516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58364278569 + 3180057664 = 241587^2 + 56392^2 .

It is a cyclic number.

It is not a de Polignac number, because 61544336233 - 2⁵ = 61544336201 is a prime.

It is not a weakly prime, because it can be changed into another prime (61544333233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772168116 + 30772168117.

It is an arithmetic number, because the mean of its divisors is an integer number (30772168117).

Almost surely, 2^61544336233 is an apocalyptic number.

It is an amenable number.

61544336233 is a deficient number, since it is larger than the sum of its proper divisors (1).

61544336233 is an equidigital number, since it uses as much as digits as its factorization.

61544336233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 40.

The spelling of 61544336233 in words is "sixty-one billion, five hundred forty-four million, three hundred thirty-six thousand, two hundred thirty-three".