2071817656 has 16 divisors (see below), whose sum is σ = 3904182000. Its totient is φ = 1030702464.

The previous prime is 2071817653. The next prime is 2071817723. The reversal of 2071817656 is 6567181702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071817653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649105 + ... + 652288.

It is an arithmetic number, because the mean of its divisors is an integer number (244011375).

Almost surely, 2^2071817656 is an apocalyptic number.

It is an amenable number.

2071817656 is a deficient number, since it is larger than the sum of its proper divisors (1832364344).

2071817656 is a wasteful number, since it uses less digits than its factorization.

2071817656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301598 (or 1301594 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 2071817656 is about 45517.2237290457. The cubic root of 2071817656 is about 1274.8248188896.

The spelling of 2071817656 in words is "two billion, seventy-one million, eight hundred seventeen thousand, six hundred fifty-six".