147678167144689 has 4 divisors (see below), whose sum is σ = 150099120704500. Its totient is φ = 145257213584880.

The previous prime is 147678167144671. The next prime is 147678167144699. The reversal of 147678167144689 is 986441761876741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2380046707600 + 145298120437089 = 1542740^2 + 12053967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147678167144689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147678167144699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210476779814 + ... + 1210476779935.

It is an arithmetic number, because the mean of its divisors is an integer number (37524780176125).

Almost surely, 2^{147678167144689} is an apocalyptic number.

It is an amenable number.

147678167144689 is a deficient number, since it is larger than the sum of its proper divisors (2420953559811).

147678167144689 is an equidigital number, since it uses as much as digits as its factorization.

147678167144689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420953559810.

The product of its digits is 2731180032, while the sum is 79.

The spelling of 147678167144689 in words is "one hundred forty-seven trillion, six hundred seventy-eight billion, one hundred sixty-seven million, one hundred forty-four thousand, six hundred eighty-nine".