999245542999 has 8 divisors (see below), whose sum is σ = 1091410584192. Its totient is φ = 907301258040.

The previous prime is 999245542991. The next prime is 999245543003.

999245542999 is nontrivially palindromic in base 10.

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 999245542999 - 2³ = 999245542991 is a prime.

It is a super-4 number, since 4×999245542999⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999245542991) 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, 55179589 + ... + 55197694.

It is an arithmetic number, because the mean of its divisors is an integer number (136426323024).

Almost surely, 2^999245542999 is an apocalyptic number.

999245542999 is a deficient number, since it is larger than the sum of its proper divisors (92165041193).

999245542999 is a wasteful number, since it uses less digits than its factorization.

999245542999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110378117.

The product of its digits is 850305600, while the sum is 76.

The spelling of 999245542999 in words is "nine hundred ninety-nine billion, two hundred forty-five million, five hundred forty-two thousand, nine hundred ninety-nine".