61129628333 has 2 divisors, whose sum is σ = 61129628334. Its totient is φ = 61129628332.

The previous prime is 61129628317. The next prime is 61129628353. The reversal of 61129628333 is 33382692116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39236874889 + 21892753444 = 198083^2 + 147962^2 .

It is a cyclic number.

It is not a de Polignac number, because 61129628333 - 2⁴ = 61129628317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61129628353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30564814166 + 30564814167.

It is an arithmetic number, because the mean of its divisors is an integer number (30564814167).

Almost surely, 2^61129628333 is an apocalyptic number.

It is an amenable number.

61129628333 is a deficient number, since it is larger than the sum of its proper divisors (1).

61129628333 is an equidigital number, since it uses as much as digits as its factorization.

61129628333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The spelling of 61129628333 in words is "sixty-one billion, one hundred twenty-nine million, six hundred twenty-eight thousand, three hundred thirty-three".