147990885121 has 4 divisors (see below), whose sum is σ = 148126285012. Its totient is φ = 147855485232.

The previous prime is 147990885079. The next prime is 147990885131. The reversal of 147990885121 is 121588099741.

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 147056910400 + 933974721 = 383480^2 + 30561^2 .

It is a cyclic number.

It is not a de Polignac number, because 147990885121 - 2⁹ = 147990884609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147990885131) 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, 67698306 + ... + 67700491.

It is an arithmetic number, because the mean of its divisors is an integer number (37031571253).

Almost surely, 2^147990885121 is an apocalyptic number.

It is an amenable number.

147990885121 is a deficient number, since it is larger than the sum of its proper divisors (135399891).

147990885121 is a wasteful number, since it uses less digits than its factorization.

147990885121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135399890.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The spelling of 147990885121 in words is "one hundred forty-seven billion, nine hundred ninety million, eight hundred eighty-five thousand, one hundred twenty-one".