147634668657647 has 4 divisors (see below), whose sum is σ = 154053567294960. Its totient is φ = 141215770020336.

The previous prime is 147634668657607. The next prime is 147634668657661. The reversal of 147634668657647 is 746756866436741.

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

It is a cyclic number.

It is not a de Polignac number, because 147634668657647 - 2²⁰ = 147634667609071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147634668657607) 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, 3209449318622 + ... + 3209449318667.

It is an arithmetic number, because the mean of its divisors is an integer number (38513391823740).

Almost surely, 2^{147634668657647} is an apocalyptic number.

147634668657647 is a deficient number, since it is larger than the sum of its proper divisors (6418898637313).

147634668657647 is an equidigital number, since it uses as much as digits as its factorization.

147634668657647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418898637312.

The product of its digits is 20483850240, while the sum is 80.

The spelling of 147634668657647 in words is "one hundred forty-seven trillion, six hundred thirty-four billion, six hundred sixty-eight million, six hundred fifty-seven thousand, six hundred forty-seven".