10001531161511 has 8 divisors (see below), whose sum is σ = 10023550053840. Its totient is φ = 9979536244608.

The previous prime is 10001531161487. The next prime is 10001531161513. The reversal of 10001531161511 is 11516113510001.

10001531161511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001531161511 - 2¹⁰ = 10001531160487 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 (10001531161513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5158496 + ... + 6827381.

It is an arithmetic number, because the mean of its divisors is an integer number (1252943756730).

Almost surely, 2^{10001531161511} is an apocalyptic number.

10001531161511 is a deficient number, since it is larger than the sum of its proper divisors (22018892329).

10001531161511 is a wasteful number, since it uses less digits than its factorization.

10001531161511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11987713.

The product of its (nonzero) digits is 450, while the sum is 26.

Adding to 10001531161511 its reverse (11516113510001), we get a palindrome (21517644671512).

The spelling of 10001531161511 in words is "ten trillion, one billion, five hundred thirty-one million, one hundred sixty-one thousand, five hundred eleven".