61205652005999 has 2 divisors, whose sum is σ = 61205652006000. Its totient is φ = 61205652005998.

The previous prime is 61205652005989. The next prime is 61205652006013. The reversal of 61205652005999 is 99950025650216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61205652005999 - 2⁴ = 61205652005983 is a prime.

It is a super-2 number, since 2×61205652005999² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61205652005989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30602826002999 + 30602826003000.

It is an arithmetic number, because the mean of its divisors is an integer number (30602826003000).

Almost surely, 2^{61205652005999} is an apocalyptic number.

61205652005999 is a deficient number, since it is larger than the sum of its proper divisors (1).

61205652005999 is an equidigital number, since it uses as much as digits as its factorization.

61205652005999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122000, while the sum is 59.

The spelling of 61205652005999 in words is "sixty-one trillion, two hundred five billion, six hundred fifty-two million, five thousand, nine hundred ninety-nine".