2156107561067 has 8 divisors (see below), whose sum is σ = 2183511421440. Its totient is φ = 2128706484840.

The previous prime is 2156107561021. The next prime is 2156107561147. The reversal of 2156107561067 is 7601657016512.

It is a happy number.

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 2156107561067 - 2³⁴ = 2138927691883 is a prime.

It is a super-3 number, since 3×2156107561067³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156107561007) 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, 885338 + ... + 2257440.

It is an arithmetic number, because the mean of its divisors is an integer number (272938927680).

Almost surely, 2^{2156107561067} is an apocalyptic number.

2156107561067 is a deficient number, since it is larger than the sum of its proper divisors (27403860373).

2156107561067 is a wasteful number, since it uses less digits than its factorization.

2156107561067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392073.

The product of its (nonzero) digits is 529200, while the sum is 47.

Subtracting 2156107561067 from its reverse (7601657016512), we obtain a palindrome (5445549455445).

The spelling of 2156107561067 in words is "two trillion, one hundred fifty-six billion, one hundred seven million, five hundred sixty-one thousand, sixty-seven".