147891244477 has 4 divisors (see below), whose sum is σ = 147942616320. Its totient is φ = 147839872636.

The previous prime is 147891244429. The next prime is 147891244489. The reversal of 147891244477 is 774442198741.

It is a happy number.

147891244477 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147891244477 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 (147891244777) 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, 25681603 + ... + 25687360.

It is an arithmetic number, because the mean of its divisors is an integer number (36985654080).

Almost surely, 2^147891244477 is an apocalyptic number.

It is an amenable number.

147891244477 is a deficient number, since it is larger than the sum of its proper divisors (51371843).

147891244477 is an equidigital number, since it uses as much as digits as its factorization.

147891244477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51371842.

The product of its digits is 12644352, while the sum is 58.

The spelling of 147891244477 in words is "one hundred forty-seven billion, eight hundred ninety-one million, two hundred forty-four thousand, four hundred seventy-seven".