1009811492407 has 4 divisors (see below), whose sum is σ = 1009832254816. Its totient is φ = 1009790730000.

The previous prime is 1009811492369. The next prime is 1009811492413. The reversal of 1009811492407 is 7042941189001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1009811492407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009811402407) 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 3 ways as a sum of consecutive naturals, for example, 10308078 + ... + 10405579.

It is an arithmetic number, because the mean of its divisors is an integer number (252458063704).

Almost surely, 2^{1009811492407} is an apocalyptic number.

1009811492407 is a deficient number, since it is larger than the sum of its proper divisors (20762409).

1009811492407 is an equidigital number, since it uses as much as digits as its factorization.

1009811492407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20762408.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 1009811492407 in words is "one trillion, nine billion, eight hundred eleven million, four hundred ninety-two thousand, four hundred seven".