64155412417 has 2 divisors, whose sum is σ = 64155412418. Its totient is φ = 64155412416.

The previous prime is 64155412339. The next prime is 64155412441. The reversal of 64155412417 is 71421455146.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32087198641 + 32068213776 = 179129^2 + 179076^2 .

It is a cyclic number.

It is not a de Polignac number, because 64155412417 - 2¹¹ = 64155410369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64155412417.

It is not a weakly prime, because it can be changed into another prime (64155412817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32077706208 + 32077706209.

It is an arithmetic number, because the mean of its divisors is an integer number (32077706209).

Almost surely, 2^64155412417 is an apocalyptic number.

It is an amenable number.

64155412417 is a deficient number, since it is larger than the sum of its proper divisors (1).

64155412417 is an equidigital number, since it uses as much as digits as its factorization.

64155412417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The spelling of 64155412417 in words is "sixty-four billion, one hundred fifty-five million, four hundred twelve thousand, four hundred seventeen".