151065720217 has 4 divisors (see below), whose sum is σ = 151970305536. Its totient is φ = 150161134900.

The previous prime is 151065720203. The next prime is 151065720233. The reversal of 151065720217 is 712027560151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712027560151 = 53 ⋅13434482267.

It is a cyclic number.

It is not a de Polignac number, because 151065720217 - 2¹⁹ = 151065195929 is a prime.

It is a super-3 number, since 3×151065720217³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151065720257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452292409 + ... + 452292742.

It is an arithmetic number, because the mean of its divisors is an integer number (37992576384).

Almost surely, 2^151065720217 is an apocalyptic number.

It is an amenable number.

151065720217 is a deficient number, since it is larger than the sum of its proper divisors (904585319).

151065720217 is an equidigital number, since it uses as much as digits as its factorization.

151065720217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904585318.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 151065720217 in words is "one hundred fifty-one billion, sixty-five million, seven hundred twenty thousand, two hundred seventeen".