2130156243665 has 24 divisors (see below), whose sum is σ = 2709794461248. Its totient is φ = 1607074256480.

The previous prime is 2130156243661. The next prime is 2130156243679. The reversal of 2130156243665 is 5663426510312.

It is not a de Polignac number, because 2130156243665 - 2² = 2130156243661 is a prime.

It is a super-4 number, since 4×2130156243665⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2130156243661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5483699 + ... + 5859288.

It is an arithmetic number, because the mean of its divisors is an integer number (112908102552).

Almost surely, 2^{2130156243665} is an apocalyptic number.

It is an amenable number.

2130156243665 is a deficient number, since it is larger than the sum of its proper divisors (579638217583).

2130156243665 is a wasteful number, since it uses less digits than its factorization.

2130156243665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343109 (or 11343086 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 2130156243665 in words is "two trillion, one hundred thirty billion, one hundred fifty-six million, two hundred forty-three thousand, six hundred sixty-five".