2642640111 has 6 divisors (see below), whose sum is σ = 3817146840. Its totient is φ = 1761760068.

The previous prime is 2642640103. The next prime is 2642640151. The reversal of 2642640111 is 1110462462.

2642640111 is a `hidden beast` number, since 2 + 6 + 4 + 2 + 640 + 1 + 11 = 666.

It is not a de Polignac number, because 2642640111 - 2³ = 2642640103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642640151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146813331 + ... + 146813348.

It is an arithmetic number, because the mean of its divisors is an integer number (636191140).

Almost surely, 2^2642640111 is an apocalyptic number.

2642640111 is a deficient number, since it is larger than the sum of its proper divisors (1174506729).

2642640111 is a wasteful number, since it uses less digits than its factorization.

2642640111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293626685 (or 293626682 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2642640111 is about 51406.6154400385. The cubic root of 2642640111 is about 1382.5452067618.

The spelling of 2642640111 in words is "two billion, six hundred forty-two million, six hundred forty thousand, one hundred eleven".