2157583711 has 4 divisors (see below), whose sum is σ = 2160084672. Its totient is φ = 2155082752.

The previous prime is 2157583709. The next prime is 2157583717. The reversal of 2157583711 is 1173857512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2157583711 - 2¹ = 2157583709 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157583717) 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, 1249186 + ... + 1250911.

It is an arithmetic number, because the mean of its divisors is an integer number (540021168).

Almost surely, 2^2157583711 is an apocalyptic number.

2157583711 is a deficient number, since it is larger than the sum of its proper divisors (2500961).

2157583711 is an equidigital number, since it uses as much as digits as its factorization.

2157583711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500960.

The product of its digits is 58800, while the sum is 40.

The square root of 2157583711 is about 46449.7977498288. The cubic root of 2157583711 is about 1292.1786215019.

The spelling of 2157583711 in words is "two billion, one hundred fifty-seven million, five hundred eighty-three thousand, seven hundred eleven".