152777640217 has 2 divisors, whose sum is σ = 152777640218. Its totient is φ = 152777640216.

The previous prime is 152777640193. The next prime is 152777640271. The reversal of 152777640217 is 712046777251.

Together with next prime (152777640271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114011574336 + 38766065881 = 337656^2 + 196891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152777640217 is a prime.

It is not a weakly prime, because it can be changed into another prime (152777620217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76388820108 + 76388820109.

It is an arithmetic number, because the mean of its divisors is an integer number (76388820109).

Almost surely, 2^152777640217 is an apocalyptic number.

It is an amenable number.

152777640217 is a deficient number, since it is larger than the sum of its proper divisors (1).

152777640217 is an equidigital number, since it uses as much as digits as its factorization.

152777640217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 152777640217 in words is "one hundred fifty-two billion, seven hundred seventy-seven million, six hundred forty thousand, two hundred seventeen".