1000091000001 has 16 divisors (see below), whose sum is σ = 1424846332800. Its totient is φ = 621751120128.

The previous prime is 1000090999997. The next prime is 1000091000009. The reversal of 1000091000001 is 1000001900001.

It is not a de Polignac number, because 1000091000001 - 2² = 1000090999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000091000009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89946861 + ... + 89957978.

It is an arithmetic number, because the mean of its divisors is an integer number (89052895800).

Almost surely, 2^{1000091000001} is an apocalyptic number.

It is an amenable number.

1000091000001 is a deficient number, since it is larger than the sum of its proper divisors (424755332799).

1000091000001 is a wasteful number, since it uses less digits than its factorization.

1000091000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179904968.

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 1000091000001 its reverse (1000001900001), we get a palindrome (2000092900002).

The spelling of 1000091000001 in words is "one trillion, ninety-one million, one", and thus it is an aban number and an uban number.