147996493081 has 4 divisors (see below), whose sum is σ = 148033048500. Its totient is φ = 147959937664.

The previous prime is 147996493069. The next prime is 147996493187. The reversal of 147996493081 is 180394699741.

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 11699667225 + 136296825856 = 108165^2 + 369184^2 .

It is a cyclic number.

It is not a de Polignac number, because 147996493081 - 2⁹ = 147996492569 is a prime.

It is a super-2 number, since 2×147996493081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147996493481) 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, 18271636 + ... + 18279733.

It is an arithmetic number, because the mean of its divisors is an integer number (37008262125).

Almost surely, 2^147996493081 is an apocalyptic number.

It is an amenable number.

147996493081 is a deficient number, since it is larger than the sum of its proper divisors (36555419).

147996493081 is an equidigital number, since it uses as much as digits as its factorization.

147996493081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36555418.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 147996493081 in words is "one hundred forty-seven billion, nine hundred ninety-six million, four hundred ninety-three thousand, eighty-one".