998799361445 has 8 divisors (see below), whose sum is σ = 1199265525144. Its totient is φ = 798568628224.

The previous prime is 998799361331. The next prime is 998799361447. The reversal of 998799361445 is 544163997899.

It can be written as a sum of positive squares in 4 ways, for example, as 398109259681 + 600690101764 = 630959^2 + 775042^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 998799361445 - 2¹² = 998799357349 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 (998799361447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58848284 + ... + 58865253.

It is an arithmetic number, because the mean of its divisors is an integer number (149908190643).

Almost surely, 2^998799361445 is an apocalyptic number.

It is an amenable number.

998799361445 is a deficient number, since it is larger than the sum of its proper divisors (200466163699).

998799361445 is a wasteful number, since it uses less digits than its factorization.

998799361445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117715239.

The product of its digits is 529079040, while the sum is 74.

The spelling of 998799361445 in words is "nine hundred ninety-eight billion, seven hundred ninety-nine million, three hundred sixty-one thousand, four hundred forty-five".