2140065645 has 8 divisors (see below), whose sum is σ = 3424105056. Its totient is φ = 1141368336.

The previous prime is 2140065637. The next prime is 2140065671. The reversal of 2140065645 is 5465600412.

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

It is not a de Polignac number, because 2140065645 - 2³ = 2140065637 is a prime.

It is a super-3 number, since 3×2140065645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71335507 + ... + 71335536.

It is an arithmetic number, because the mean of its divisors is an integer number (428013132).

Almost surely, 2^2140065645 is an apocalyptic number.

It is an amenable number.

2140065645 is a deficient number, since it is larger than the sum of its proper divisors (1284039411).

2140065645 is a wasteful number, since it uses less digits than its factorization.

2140065645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142671051.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2140065645 is about 46260.8435396502. The cubic root of 2140065645 is about 1288.6719190434.

The spelling of 2140065645 in words is "two billion, one hundred forty million, sixty-five thousand, six hundred forty-five".