309988054045 has 8 divisors (see below), whose sum is σ = 381058486200. Its totient is φ = 241941895680.

The previous prime is 309988054043. The next prime is 309988054049. The reversal of 309988054045 is 540450889903.

It can be written as a sum of positive squares in 4 ways, for example, as 15688314009 + 294299740036 = 125253^2 + 542494^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 309988054045 - 2¹ = 309988054043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309988054043) 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 7 ways as a sum of consecutive naturals, for example, 756068220 + ... + 756068629.

It is an arithmetic number, because the mean of its divisors is an integer number (47632310775).

Almost surely, 2^309988054045 is an apocalyptic number.

It is an amenable number.

309988054045 is a deficient number, since it is larger than the sum of its proper divisors (71070432155).

309988054045 is a wasteful number, since it uses less digits than its factorization.

309988054045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512136895.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 309988054045 in words is "three hundred nine billion, nine hundred eighty-eight million, fifty-four thousand, forty-five".