61528722859 has 2 divisors, whose sum is σ = 61528722860. Its totient is φ = 61528722858.

The previous prime is 61528722839. The next prime is 61528722869. The reversal of 61528722859 is 95822782516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61528722859 - 2²⁷ = 61394505131 is a prime.

It is not a weakly prime, because it can be changed into another prime (61528722839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30764361429 + 30764361430.

It is an arithmetic number, because the mean of its divisors is an integer number (30764361430).

Almost surely, 2^61528722859 is an apocalyptic number.

61528722859 is a deficient number, since it is larger than the sum of its proper divisors (1).

61528722859 is an equidigital number, since it uses as much as digits as its factorization.

61528722859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 55.

The spelling of 61528722859 in words is "sixty-one billion, five hundred twenty-eight million, seven hundred twenty-two thousand, eight hundred fifty-nine".