212787257683 has 32 divisors (see below), whose sum is σ = 285994114560. Its totient is φ = 152896412160.

The previous prime is 212787257663. The next prime is 212787257699. The reversal of 212787257683 is 386752787212.

212787257683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212787257683 - 2²¹ = 212785160531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212787257603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 869188 + ... + 1086766.

It is an arithmetic number, because the mean of its divisors is an integer number (8937316080).

Almost surely, 2^212787257683 is an apocalyptic number.

212787257683 is a deficient number, since it is larger than the sum of its proper divisors (73206856877).

212787257683 is a wasteful number, since it uses less digits than its factorization.

212787257683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218587.

The product of its digits is 15805440, while the sum is 58.

The spelling of 212787257683 in words is "two hundred twelve billion, seven hundred eighty-seven million, two hundred fifty-seven thousand, six hundred eighty-three".