2001115153291 has 4 divisors (see below), whose sum is σ = 2001120790312. Its totient is φ = 2001109516272.

The previous prime is 2001115153231. The next prime is 2001115153307. The reversal of 2001115153291 is 1923515111002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001115153291 - 2¹⁷ = 2001115022219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001115153231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2247450 + ... + 3008863.

It is an arithmetic number, because the mean of its divisors is an integer number (500280197578).

Almost surely, 2^{2001115153291} is an apocalyptic number.

2001115153291 is a deficient number, since it is larger than the sum of its proper divisors (5637021).

2001115153291 is an equidigital number, since it uses as much as digits as its factorization.

2001115153291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637020.

The product of its (nonzero) digits is 2700, while the sum is 31.

The spelling of 2001115153291 in words is "two trillion, one billion, one hundred fifteen million, one hundred fifty-three thousand, two hundred ninety-one".