147278109217 has 8 divisors (see below), whose sum is σ = 147442668480. Its totient is φ = 147113606640.

The previous prime is 147278109211. The next prime is 147278109241. The reversal of 147278109217 is 712901872741.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 147278109217 - 2⁷ = 147278109089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147278109211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7084284 + ... + 7105042.

It is an arithmetic number, because the mean of its divisors is an integer number (18430333560).

Almost surely, 2^147278109217 is an apocalyptic number.

It is an amenable number.

147278109217 is a deficient number, since it is larger than the sum of its proper divisors (164559263).

147278109217 is a wasteful number, since it uses less digits than its factorization.

147278109217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28343.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 147278109217 in words is "one hundred forty-seven billion, two hundred seventy-eight million, one hundred nine thousand, two hundred seventeen".