2011643055 has 48 divisors (see below), whose sum is σ = 3604367520. Its totient is φ = 1037318400.

The previous prime is 2011643021. The next prime is 2011643093. The reversal of 2011643055 is 5503461102.

2011643055 is a `hidden beast` number, since 2 + 0 + 11 + 643 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 2011643055 - 2¹⁴ = 2011626671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155745 + ... + 168165.

It is an arithmetic number, because the mean of its divisors is an integer number (75090990).

Almost surely, 2^2011643055 is an apocalyptic number.

2011643055 is a deficient number, since it is larger than the sum of its proper divisors (1592724465).

2011643055 is a wasteful number, since it uses less digits than its factorization.

2011643055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552 (or 12549 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2011643055 is about 44851.3439597968. The cubic root of 2011643055 is about 1262.3612091979.

The spelling of 2011643055 in words is "two billion, eleven million, six hundred forty-three thousand, fifty-five".