999998254317001 has 9 divisors (see below), whose sum is σ = 1001218131812653. Its totient is φ = 998779861420780.

The previous prime is 999998254316981. The next prime is 999998254317067. The reversal of 999998254317001 is 100713452899999.

The square root of 999998254317001 is 31622749.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 999998254317001 - 2⁹ = 999998254316489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999998254317701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26531467566 + ... + 26531505256.

Almost surely, 2^{999998254317001} is an apocalyptic number.

999998254317001 is the 31622749-th square number.

999998254317001 is the 15811375-th centered octagonal number.

It is an amenable number.

999998254317001 is a deficient number, since it is larger than the sum of its proper divisors (1219877495652).

999998254317001 is an frugal number, since it uses more digits than its factorization.

999998254317001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77060 (or 38530 counting only the distinct ones).

The product of its (nonzero) digits is 396809280, while the sum is 76.

The spelling of 999998254317001 in words is "nine hundred ninety-nine trillion, nine hundred ninety-eight billion, two hundred fifty-four million, three hundred seventeen thousand, one".