1000550999805 has 64 divisors (see below), whose sum is σ = 1941575712768. Its totient is φ = 429517071360.

The previous prime is 1000550999801. The next prime is 1000550999821. The reversal of 1000550999805 is 5089990550001.

It is a happy number.

It is not a de Polignac number, because 1000550999805 - 2² = 1000550999801 is a prime.

It is a super-2 number, since 2×1000550999805² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000550999801) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 158100 + ... + 1423410.

It is an arithmetic number, because the mean of its divisors is an integer number (30337120512).

Almost surely, 2^{1000550999805} is an apocalyptic number.

1000550999805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000550999805 is a deficient number, since it is larger than the sum of its proper divisors (941024712963).

1000550999805 is a wasteful number, since it uses less digits than its factorization.

1000550999805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265786.

The product of its (nonzero) digits is 729000, while the sum is 51.

The spelling of 1000550999805 in words is "one trillion, five hundred fifty million, nine hundred ninety-nine thousand, eight hundred five".