1000005091000 has 64 divisors (see below), whose sum is σ = 2340510550560. Its totient is φ = 399916800000.

The previous prime is 1000005090923. The next prime is 1000005091009. The reversal of 1000005091000 is 1905000001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000005091009) 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 15 ways as a sum of consecutive naturals, for example, 4696855 + ... + 4905145.

Almost surely, 2^{1000005091000} is an apocalyptic number.

1000005091000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000005091000 is an abundant number, since it is smaller than the sum of its proper divisors (1340505459560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000005091000 is a wasteful number, since it uses less digits than its factorization.

1000005091000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213113 (or 213099 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 16.

The spelling of 1000005091000 in words is "one trillion, five million, ninety-one thousand".