995555001001 has 12 divisors (see below), whose sum is σ = 1095064557300. Its totient is φ = 904407511040.

The previous prime is 995555000893. The next prime is 995555001029. The reversal of 995555001001 is 100100555599.

It can be written as a sum of positive squares in 2 ways, for example, as 115973621401 + 879581379600 = 340549^2 + 937860^2 .

It is not a de Polignac number, because 995555001001 - 2⁷ = 995555000873 is a prime.

It is a super-2 number, since 2×995555001001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (995555001031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2749216 + ... + 3090193.

It is an arithmetic number, because the mean of its divisors is an integer number (91255379775).

Almost surely, 2^995555001001 is an apocalyptic number.

It is an amenable number.

995555001001 is a deficient number, since it is larger than the sum of its proper divisors (99509556299).

995555001001 is a wasteful number, since it uses less digits than its factorization.

995555001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840840 (or 5840829 counting only the distinct ones).

The product of its (nonzero) digits is 50625, while the sum is 40.

The spelling of 995555001001 in words is "nine hundred ninety-five billion, five hundred fifty-five million, one thousand, one".