147968205251 has 4 divisors (see below), whose sum is σ = 149404789872. Its totient is φ = 146531620632.

The previous prime is 147968205233. The next prime is 147968205269. The reversal of 147968205251 is 152502869741.

147968205251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152502869741 = 31 ⋅4919447411.

It is an interprime number because it is at equal distance from previous prime (147968205233) and next prime (147968205269).

It is a cyclic number.

It is not a de Polignac number, because 147968205251 - 2³⁰ = 146894463427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147968205251.

It is not an unprimeable number, because it can be changed into a prime (147968205851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718292156 + ... + 718292361.

It is an arithmetic number, because the mean of its divisors is an integer number (37351197468).

Almost surely, 2^147968205251 is an apocalyptic number.

147968205251 is a deficient number, since it is larger than the sum of its proper divisors (1436584621).

147968205251 is a wasteful number, since it uses less digits than its factorization.

147968205251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436584620.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 147968205251 in words is "one hundred forty-seven billion, nine hundred sixty-eight million, two hundred five thousand, two hundred fifty-one".