2642218771 has 16 divisors (see below), whose sum is σ = 2828805120. Its totient is φ = 2462373760.

The previous prime is 2642218769. The next prime is 2642218781. The reversal of 2642218771 is 1778122462.

It is a cyclic number.

It is not a de Polignac number, because 2642218771 - 2¹ = 2642218769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642218741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144726 + ... + 161956.

It is an arithmetic number, because the mean of its divisors is an integer number (176800320).

Almost surely, 2^2642218771 is an apocalyptic number.

2642218771 is a deficient number, since it is larger than the sum of its proper divisors (186586349).

2642218771 is a wasteful number, since it uses less digits than its factorization.

2642218771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17426.

The product of its digits is 75264, while the sum is 40.

The square root of 2642218771 is about 51402.5171659910. The cubic root of 2642218771 is about 1382.4717256299.

The spelling of 2642218771 in words is "two billion, six hundred forty-two million, two hundred eighteen thousand, seven hundred seventy-one".