2531802006161 has 4 divisors (see below), whose sum is σ = 2535465975024. Its totient is φ = 2528138037300.

The previous prime is 2531802006133. The next prime is 2531802006187. The reversal of 2531802006161 is 1616002081352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531802006161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531802003161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1831983395 + ... + 1831984776.

It is an arithmetic number, because the mean of its divisors is an integer number (633866493756).

Almost surely, 2^{2531802006161} is an apocalyptic number.

It is an amenable number.

2531802006161 is a deficient number, since it is larger than the sum of its proper divisors (3663968863).

2531802006161 is an equidigital number, since it uses as much as digits as its factorization.

2531802006161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663968862.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 2531802006161 in words is "two trillion, five hundred thirty-one billion, eight hundred two million, six thousand, one hundred sixty-one".