2140645716 has 72 divisors (see below), whose sum is σ = 6213698400. Its totient is φ = 614537280.

The previous prime is 2140645709. The next prime is 2140645721. The reversal of 2140645716 is 6175460412.

2140645716 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 645 + 7 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 134731 + ... + 149778.

Almost surely, 2^2140645716 is an apocalyptic number.

It is an amenable number.

2140645716 is an abundant number, since it is smaller than the sum of its proper divisors (4073052684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2140645716 is a wasteful number, since it uses less digits than its factorization.

2140645716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284549 (or 284544 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2140645716 is about 46267.1126827685. The cubic root of 2140645716 is about 1288.7883412789.

The spelling of 2140645716 in words is "two billion, one hundred forty million, six hundred forty-five thousand, seven hundred sixteen".