2120917671 has 24 divisors (see below), whose sum is σ = 3260784384. Its totient is φ = 1323786240.

The previous prime is 2120917649. The next prime is 2120917709. The reversal of 2120917671 is 1767190212.

It is a happy number.

It is not a de Polignac number, because 2120917671 - 2¹⁰ = 2120916647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120917171) 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, 7066 + ... + 65511.

It is an arithmetic number, because the mean of its divisors is an integer number (135866016).

Almost surely, 2^2120917671 is an apocalyptic number.

2120917671 is a deficient number, since it is larger than the sum of its proper divisors (1139866713).

2120917671 is a wasteful number, since it uses less digits than its factorization.

2120917671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72791 (or 72788 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 2120917671 is about 46053.4219249775. The cubic root of 2120917671 is about 1284.8169877694.

The spelling of 2120917671 in words is "two billion, one hundred twenty million, nine hundred seventeen thousand, six hundred seventy-one".