999999550850131 has 8 divisors (see below), whose sum is σ = 1077458109210224. Its totient is φ = 922617494773920.

The previous prime is 999999550850099. The next prime is 999999550850171. The reversal of 999999550850131 is 131058055999999.

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 999999550850131 - 2⁵ = 999999550850099 is a prime.

It is a super-2 number, since 2×999999550850131² (a number of 31 digits) contains 22 as substring.

It is the 31622770-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999999550850171) by changing a digit.

It is a nontrivial repunit in base 31622769.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19125543816 + ... + 19125596101.

It is an arithmetic number, because the mean of its divisors is an integer number (134682263651278).

Almost surely, 2^{999999550850131} is an apocalyptic number.

999999550850131 is a deficient number, since it is larger than the sum of its proper divisors (77458558360093).

999999550850131 is a wasteful number, since it uses less digits than its factorization.

999999550850131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38251141941.

The product of its (nonzero) digits is 1594323000, while the sum is 82.

The spelling of 999999550850131 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, five hundred fifty million, eight hundred fifty thousand, one hundred thirty-one".