2156102203461 has 8 divisors (see below), whose sum is σ = 2944920082944. Its totient is φ = 1402342896480.

The previous prime is 2156102203439. The next prime is 2156102203471. The reversal of 2156102203461 is 1643022016512.

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

It is not a de Polignac number, because 2156102203461 - 2⁵ = 2156102203429 is a prime.

It is a super-4 number, since 4×2156102203461⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156102203471) 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 7 ways as a sum of consecutive naturals, for example, 8764642981 + ... + 8764643226.

It is an arithmetic number, because the mean of its divisors is an integer number (368115010368).

Almost surely, 2^{2156102203461} is an apocalyptic number.

It is an amenable number.

2156102203461 is a deficient number, since it is larger than the sum of its proper divisors (788817879483).

2156102203461 is a wasteful number, since it uses less digits than its factorization.

2156102203461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17529286251.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 2156102203461 its reverse (1643022016512), we get a palindrome (3799124219973).

The spelling of 2156102203461 in words is "two trillion, one hundred fifty-six billion, one hundred two million, two hundred three thousand, four hundred sixty-one".